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2 daniel-mar 1
<?php
2
 
3
/*
16 daniel-mar 4
 * MAC (EUI-48 and EUI-64) utils for PHP
15 daniel-mar 5
 * Copyright 2017 - 2023 Daniel Marschall, ViaThinkSoft
17 daniel-mar 6
 * Version 2023-05-01
2 daniel-mar 7
 *
8
 * Licensed under the Apache License, Version 2.0 (the "License");
9
 * you may not use this file except in compliance with the License.
10
 * You may obtain a copy of the License at
11
 *
12
 *     http://www.apache.org/licenses/LICENSE-2.0
13
 *
14
 * Unless required by applicable law or agreed to in writing, software
15
 * distributed under the License is distributed on an "AS IS" BASIS,
16
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17
 * See the License for the specific language governing permissions and
18
 * limitations under the License.
19
 */
20
 
18 daniel-mar 21
// Very good resources for information about OUI, EUI, MAC, ...
22
// - https://mac-address.alldatafeeds.com/faq#how-to-recognise-mac-address-application
23
// - https://standards.ieee.org/wp-content/uploads/import/documents/tutorials/eui.pdf
24
// - https://en.m.wikipedia.org/wiki/Organizationally_unique_identifier
25
 
15 daniel-mar 26
const IEEE_MAC_REGISTRY = __DIR__ . '/../web-data';
2 daniel-mar 27
 
15 daniel-mar 28
/**
18 daniel-mar 29
 * Checks if a MAC, EUI, ELI, or IPv6-LinkLocal address is valid
17 daniel-mar 30
 * @param string $mac MAC, EUI, or IPv6-LinkLocal Address
31
 * @return bool True if it is valid
15 daniel-mar 32
 */
33
function mac_valid(string $mac): bool {
17 daniel-mar 34
        $tmp = ipv6linklocal_to_mac48($mac);
16 daniel-mar 35
        if ($tmp !== false) $mac = $tmp;
36
 
2 daniel-mar 37
        $mac = str_replace(array('-', ':'), '', $mac);
38
        $mac = strtoupper($mac);
39
 
16 daniel-mar 40
        if ((strlen($mac) != 12) && (strlen($mac) != 16)) return false;
2 daniel-mar 41
 
42
        $mac = preg_replace('@[0-9A-F]@', '', $mac);
43
 
16 daniel-mar 44
        return ($mac === '');
2 daniel-mar 45
}
46
 
15 daniel-mar 47
/**
18 daniel-mar 48
 * Returns the amount of bits of a MAC, EUI, or ELI
16 daniel-mar 49
 * @param string $mac
17 daniel-mar 50
 * @return false|int
16 daniel-mar 51
 */
17 daniel-mar 52
function eui_bits(string $mac) {
53
        if (!mac_valid($mac)) return false;
54
        $mac = mac_canonize($mac, '');
55
        return (int)(strlen($mac)*4);
56
}
57
 
58
/**
18 daniel-mar 59
 * Canonizes a MAC, EUI, ELI, or IPv6-LinkLocal address
60
 * @param string $mac MAC, EUI, ELI, or IPv6-LinkLocal Address
17 daniel-mar 61
 * @param string $delimiter Desired delimiter for inserting between each octet
62
 * @return string|false The canonized address (Note: IPv6-Linklocal becomes EUI-64)
63
 */
16 daniel-mar 64
function mac_canonize(string $mac, string $delimiter="-") {
65
        if (!mac_valid($mac)) return false;
66
 
17 daniel-mar 67
        $tmp = ipv6linklocal_to_mac48($mac);
16 daniel-mar 68
        if ($tmp !== false) $mac = $tmp;
69
 
70
        $mac = strtoupper($mac);
71
        $mac = preg_replace('@[^0-9A-F]@', '', $mac);
72
        if ((strlen($mac) != 12) && (strlen($mac) != 16)) return false;
73
        $mac = preg_replace('@^(..)(..)(..)(..)(..)(..)(..)(..)$@', '\\1'.$delimiter.'\\2'.$delimiter.'\\3'.$delimiter.'\\4'.$delimiter.'\\5'.$delimiter.'\\6'.$delimiter.'\\7'.$delimiter.'\\8', $mac);
74
        return preg_replace('@^(..)(..)(..)(..)(..)(..)$@', '\\1'.$delimiter.'\\2'.$delimiter.'\\3'.$delimiter.'\\4'.$delimiter.'\\5'.$delimiter.'\\6', $mac);
75
}
76
 
77
/**
15 daniel-mar 78
 * @param string $file
79
 * @param string $oui_name
80
 * @param string $mac
81
 * @return false|string
82
 */
83
function _lookup_ieee_registry(string $file, string $oui_name, string $mac) {
16 daniel-mar 84
        $mac = mac_canonize($mac, '');
85
        if ($mac === false) return false;
2 daniel-mar 86
        $begin = substr($mac, 0, 2).'-'.substr($mac, 2, 2).'-'.substr($mac, 4, 2);
87
        $f = file_get_contents($file);
88
 
89
        $f = str_replace("\r", '', $f);
90
 
91
        # We are using a positive-lookahead because entries like the MA-M references have a blank line between organization and address
92
        preg_match_all('@^\s*'.preg_quote($begin, '@').'\s+\(hex\)\s+(\S+)\s+(.*)\n\n\s*(?=[0-9A-F])@ismU', "$f\n\nA", $m, PREG_SET_ORDER);
93
        foreach ($m as $n) {
94
                preg_match('@(\S+)\s+\(base 16\)(.*)$@ism', $n[2], $m);
95
 
15 daniel-mar 96
                if (preg_match('@(.+)-(.+)@ism', $m[1], $o)) {
2 daniel-mar 97
                        $z = hexdec(substr($mac, 6, 6));
98
                        $beg = hexdec($o[1]);
99
                        $end = hexdec($o[2]);
100
                        if (($z < $beg) || ($z > $end)) continue;
101
                } else {
102
                        $beg = 0x000000;
103
                        $end = 0xFFFFFF;
104
                }
105
 
15 daniel-mar 106
                $x = trim(preg_replace('@^\s+@im', '', $m[2]));
2 daniel-mar 107
 
108
                # "PRIVATE" entries are only marked at the "(hex)" line, but not at the "(base16)" line
109
                if ($x == '') $x = trim($n[1]);
110
 
111
                $x = explode("\n", $x);
112
 
113
                $ra_len = strlen(dechex($end-$beg));
114
 
15 daniel-mar 115
                $out = sprintf("%-32s 0x%s\n", "IEEE $oui_name part:", substr($mac, 0, 12-$ra_len));
116
                $out .= sprintf("%-32s 0x%s\n", "NIC specific part:", substr($mac, 12-$ra_len));
117
                $out .= sprintf("%-32s %s\n", "Registrant:", $x[0]);
2 daniel-mar 118
                foreach ($x as $n => $y) {
119
                        if ($n == 0) continue;
15 daniel-mar 120
                        else if ($n == 1) $out .= sprintf("%-32s %s\n", "Address of registrant:", $y);
121
                        else if ($n >= 2) $out .= sprintf("%-32s %s\n", "", $y);
2 daniel-mar 122
                }
123
 
124
                // TODO: also print the date of last update of the OUI files
125
 
126
                return $out;
127
        }
128
 
129
        return false;
130
}
131
 
15 daniel-mar 132
/**
17 daniel-mar 133
 * Try to Decapsulate EUI-64 into MAC-48 or EUI-48
16 daniel-mar 134
 * @param string $eui64
17 daniel-mar 135
 * @return false|string If EUI-64 can be converted into EUI-48, returns EUI-48, otherwise returns EUI-64. On invalid input, return false.
16 daniel-mar 136
 */
137
function eui64_to_eui48(string $eui64) {
138
        if (!mac_valid($eui64)) return false;
139
        $eui64 = mac_canonize($eui64, '');
140
        if (eui_bits($eui64) == 48) return mac_canonize($eui64);
18 daniel-mar 141
        if ($eui64[1] == 'A') return false; // do not allow ELI-64
16 daniel-mar 142
 
17 daniel-mar 143
        if (substr($eui64, 6, 4) == 'FFFF') {
144
                // EUI-64 to MAC-48
16 daniel-mar 145
                return mac_canonize(substr($eui64, 0, 6).substr($eui64, 10, 6));
17 daniel-mar 146
        } else if (substr($eui64, 6, 4) == 'FFFE') {
147
                if ((hexdec($eui64[1])&2) == 2) {
148
                        // Modified EUI-64 to MAC/EUI-48
149
                        $eui64[1] = dechex(hexdec($eui64[1])&253); // remove bit
150
                        return mac_canonize(substr($eui64, 0, 6).substr($eui64, 10, 6));
151
                } else {
152
                        // EUI-64 to EUI-48
153
                        return mac_canonize(substr($eui64, 0, 6).substr($eui64, 10, 6));
154
                }
16 daniel-mar 155
        } else {
156
                return mac_canonize($eui64);
157
        }
158
}
159
 
160
/**
17 daniel-mar 161
 * MAC-48 to EUI-64 Encapsulation
162
 * @param string $mac48 MAC-48 address
163
 * @return false|string EUI-64 address
16 daniel-mar 164
 */
17 daniel-mar 165
function mac48_to_eui64(string $mac48) {
166
        // Note: MAC-48 is used for network hardware; EUI-48 is used to identify other devices and software.
167
        //       MAC48-to-EUI64 Encapsulation uses 0xFFFF middle part
168
        if (!mac_valid($mac48)) return false;
169
        $mac48 = mac_canonize($mac48, '');
170
        if (eui_bits($mac48) == 64) return mac_canonize($mac48);
18 daniel-mar 171
        if ($mac48[1] == 'A') return false; // do not allow ELI-48
17 daniel-mar 172
 
173
        $eui64 = substr($mac48, 0, 6).'FFFF'.substr($mac48, 6, 6);
174
        return mac_canonize($eui64);
175
}
176
 
177
/**
178
 * EUI-48 to EUI-64 Encapsulation
179
 * @param string $eui48 EUI-48 address
180
 * @return false|string EUI-64 address
181
 */
16 daniel-mar 182
function eui48_to_eui64(string $eui48) {
17 daniel-mar 183
        // Note: MAC-48 is used for network hardware; EUI-48 is used to identify other devices and software.
184
        //       EUI48-to-EUI64 Encapsulation uses 0xFFFF middle part
16 daniel-mar 185
        if (!mac_valid($eui48)) return false;
186
        $eui48 = mac_canonize($eui48, '');
187
        if (eui_bits($eui48) == 64) return mac_canonize($eui48);
18 daniel-mar 188
        if ($eui48[1] == 'A') return false; // do not allow ELI-48
16 daniel-mar 189
 
190
        $eui64 = substr($eui48, 0, 6).'FFFE'.substr($eui48, 6, 6);
191
        return mac_canonize($eui64);
192
}
193
 
194
/**
17 daniel-mar 195
 * MAC/EUI-48 to Modified EUI-64 Encapsulation
196
 * @param string $eui48 MAC-48 or EUI-48 address
197
 * @return false|string Modified EUI-64 address
16 daniel-mar 198
 */
17 daniel-mar 199
function maceui48_to_modeui64(string $eui48) {
200
        // Note: MAC-48 is used for network hardware; EUI-48 is used to identify other devices and software.
201
        //       EUI48-to-ModifiedEUI64 Encapsulation uses 0xFFFE middle part (SIC! This was a mistake by IETF, since it should actually be 0xFFFF!)
202
        if (!mac_valid($eui48)) return false;
203
        $eui48 = mac_canonize($eui48, '');
204
        if (eui_bits($eui48) == 64) return mac_canonize($eui48);
18 daniel-mar 205
        if ($eui48[1] == 'A') return false; // do not allow ELI-48
17 daniel-mar 206
 
207
        $eui64 = substr($eui48, 0, 6).'FFFE'.substr($eui48, 6, 6);
208
 
209
        $eui64[1] = dechex(hexdec($eui64[1]) | 2); // flip seventh bit
210
 
211
        return mac_canonize($eui64);
212
}
213
 
214
/**
215
 * Try to convert IPv6-LinkLocal address to MAC-48
216
 * @param string $ipv6 IPv6-LinkLocal address
217
 * @return false|string MAC-48 (or IPv6 if it was no LinkLocal address, or Modified EUI-64 if it decapsulation failed)
218
 */
219
function ipv6linklocal_to_mac48(string $ipv6) {
16 daniel-mar 220
        // https://stackoverflow.com/questions/12095835/quick-way-of-expanding-ipv6-addresses-with-php (modified)
221
        $tmp = inet_pton($ipv6);
222
        if ($tmp === false) return false;
223
        $hex = unpack("H*hex", $tmp);
224
        $ipv6 = substr(preg_replace("/([A-f0-9]{4})/", "$1:", $hex['hex']), 0, -1);
225
 
226
        // Remove "fe80::" to convert IPv6 Link Local address back to EUI-64
227
        // see https://support.lenovo.com/de/de/solutions/ht509925-how-to-convert-a-mac-address-into-an-ipv6-link-local-address-eui-64
228
        $cnt = 0;
229
        $mac = preg_replace('@^fe80:0000:0000:0000:@i', '', $ipv6, -1, $cnt);
230
        if ($cnt == 0) return false;
231
 
232
        // Set LAA to UAA again
17 daniel-mar 233
        $mac_uaa_64 = $mac;
234
        $mac_uaa_64[1] = dechex(hexdec($mac_uaa_64[1]) & 253);
16 daniel-mar 235
 
17 daniel-mar 236
        $mac_uaa_48 = eui64_to_eui48($mac_uaa_64);
237
        if (eui_bits($mac_uaa_48) == 48) {
238
                return $mac_uaa_48; // Output MAC-48 (UAA)
239
        } else {
240
                return $mac; // Failed decapsulation; output Modified EUI-64 instead
241
        }
16 daniel-mar 242
}
243
 
244
/**
17 daniel-mar 245
 * Converts MAC-48 or EUI-48 to IPv6-LinkLocal (based on Modified EUI-64)
15 daniel-mar 246
 * @param string $mac
16 daniel-mar 247
 * @return false|string
248
 */
17 daniel-mar 249
function maceui_to_ipv6linklocal(string $mac) {
16 daniel-mar 250
        if (!mac_valid($mac)) return false;
251
        if (eui_bits($mac) == 48) {
17 daniel-mar 252
                $mac = maceui48_to_modeui64($mac);
16 daniel-mar 253
        }
254
        $mac = mac_canonize($mac, '');
255
        $mac = str_pad($mac, 16, '0', STR_PAD_LEFT);
256
        return strtolower('fe80::'.substr($mac,0, 4).':'.substr($mac,4, 4).':'.substr($mac,8, 4).':'.substr($mac,12, 4));
257
}
258
 
259
/**
18 daniel-mar 260
 * Prints information about an IPv6-LinkLocal address, MAC, EUI, or ELI.
261
 * @param string $mac IPv6-LinkLocal address, MAC, EUI, or ELI
15 daniel-mar 262
 * @return void
263
 * @throws Exception
264
 */
265
function decode_mac(string $mac) {
16 daniel-mar 266
        echo sprintf("%-32s %s\n", "Input:", $mac);
267
 
17 daniel-mar 268
        // Format MAC for machine readability
269
        $mac = mac_canonize($mac, '');
270
 
16 daniel-mar 271
        $type = '';
18 daniel-mar 272
        if ($mac[1] == 'A') {
273
                // An ELI is based on a CID-24
274
                // A CID has ZYXM bits set to 1010 (0b1010 = 0xA)
275
                // Since X=1 (U/L=1), the CID cannot be used to form a universal UAA MAC (only a local LAA MAC)
276
                $type = 'ELI-'.eui_bits($mac);;
277
        } else {
278
                $tmp = ipv6linklocal_to_mac48($mac);
279
                if ($tmp !== false) {
280
                        $mac = $tmp;
281
                        $type = 'IPv6-Link-Local';
282
                }
283
                if (!mac_valid($mac)) throw new Exception("Invalid MAC address");
284
                if ($tmp === false) {
285
                        if (eui_bits($mac) == 48) {
286
                                $type = 'MAC-48 (network hardware) or EUI-48 (other devices and software)';
287
                        } else if (eui_bits($mac) == 64) {
288
                                if (substr($mac,6,4) == 'FFFE') {
289
                                        if ((hexdec($mac[1])&2) == 2) {
290
                                                $type = 'EUI-64 (MAC/EUI-48 to Modified EUI-64 Encapsulation)';
291
                                        } else {
292
                                                $type = 'EUI-64 (EUI-48 to EUI-64 Encapsulation)';
293
                                        }
294
                                } else if (substr($mac,6,4) == 'FFFF') {
295
                                        $type = 'EUI-64 (MAC-48 to EUI-64 Encapsulation)';
17 daniel-mar 296
                                } else {
18 daniel-mar 297
                                        $type = 'EUI-64 (Regular)';
17 daniel-mar 298
                                }
299
                        } else {
18 daniel-mar 300
                                assert(false); /** @phpstan-ignore-line */
17 daniel-mar 301
                        }
302
                }
16 daniel-mar 303
        }
304
        echo sprintf("%-32s %s\n", "Type:", $type);
15 daniel-mar 305
 
16 daniel-mar 306
        echo "\n";
307
 
308
        // Show various representations
18 daniel-mar 309
        if ($mac[1] == 'A') {
310
                // Note: There does not seem to exist an algorithm for converting ELI-48 <=> ELI-64
311
                echo sprintf("%-32s %s\n", "ELI-".eui_bits($mac).":", mac_canonize($mac));
17 daniel-mar 312
        } else {
18 daniel-mar 313
                $eui48 = eui64_to_eui48($mac);
314
                echo sprintf("%-32s %s\n", "EUI-48:", (eui_bits($eui48) != 48) ? 'Not available' : $eui48);
315
                if (eui_bits($mac) == 48) {
316
                        $eui64 = mac48_to_eui64($mac);
317
                        echo sprintf("%-32s %s\n", "EUI-64:", ((eui_bits($eui64) != 64) ? 'Not available' : $eui64).' (MAC-48 to EUI-64 Encapsulation)');
318
                        $eui64 = eui48_to_eui64($mac);
319
                        echo sprintf("%-32s %s\n", "", ((eui_bits($eui64) != 64) ? 'Not available' : $eui64).' (EUI-48 to EUI-64 Encapsulation)');
320
                        $eui64 = maceui48_to_modeui64($mac);
321
                        echo sprintf("%-32s %s\n", "", ((eui_bits($eui64) != 64) ? 'Not available' : $eui64).' (MAC/EUI-48 to Modified EUI-64 Encapsulation)');
322
                        $ipv6 = maceui_to_ipv6linklocal($mac);
323
                        echo sprintf("%-32s %s\n", "IPv6 link local address:", $ipv6);
324
                } else {
325
                        $eui64 = mac_canonize($mac);
326
                        echo sprintf("%-32s %s\n", "EUI-64:", $eui64);
327
                }
17 daniel-mar 328
        }
2 daniel-mar 329
 
330
        // Vergabestelle
331
        $ul = hexdec($mac[1]) & 2; // Bit #LSB+1 of Byte 1
332
        $ul_ = ($ul == 0) ? '[0] Universally Administered Address (UAA)' : '[1] Locally Administered Address (LAA)';
15 daniel-mar 333
        echo sprintf("%-32s %s\n", "Administration type (U/L flag):", $ul_);
2 daniel-mar 334
 
16 daniel-mar 335
        // Empfaengergruppe
336
        $ig = hexdec($mac[1]) & 1; // Bit #LSB+0 of Byte 1
18 daniel-mar 337
        $ig_ = ($ig == 0) ? '[0] Unicast (Individual)' : '[1] Multicast (Group)';
16 daniel-mar 338
        echo sprintf("%-32s %s\n", "Transmission type (I/G flag):", $ig_);
339
 
2 daniel-mar 340
        // Query IEEE registries
17 daniel-mar 341
        if (count(glob(IEEE_MAC_REGISTRY.DIRECTORY_SEPARATOR.'*.txt')) > 0) {
18 daniel-mar 342
                if ($mac[1] == 'A') {
343
                        // Query the CID registry
344
                        if (
345
                                ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY . DIRECTORY_SEPARATOR . 'cid.txt', 'CID', $mac))
346
                        ) {
347
                                echo $x;
348
                        }
349
                } else {
350
                        // Query the OUI registries
351
                        // TODO: Should we try to convert Unicast<=>Multicast if one of them can't be found?
352
                        if (
353
                                # The IEEE Registration Authority distinguishes between IABs and OUI-36 values. Both are 36-bit values which may be used to generate EUI-48 values, but IABs may not be used to generate EUI-64 values.[6]
354
                                # Note: The Individual Address Block (IAB) is an inactive registry activity, which has been replaced by the MA-S registry product as of January 1, 2014.
355
                                ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY . DIRECTORY_SEPARATOR . 'iab.txt', 'IAB', $mac)) ||
356
                                ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY . DIRECTORY_SEPARATOR . 'oui36.txt', 'OUI-36 (MA-S)', $mac)) ||
357
                                ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY . DIRECTORY_SEPARATOR . 'mam.txt', 'OUI-28 (MA-M)', $mac)) ||
358
                                ($x = _lookup_ieee_registry(IEEE_MAC_REGISTRY . DIRECTORY_SEPARATOR . 'oui.txt', 'OUI-24 (MA-L)', $mac))
359
                        ) {
360
                                echo $x;
361
                        }
15 daniel-mar 362
                }
2 daniel-mar 363
        }
364
 
15 daniel-mar 365
        $vm = '';
366
        // === FAQ "Detection rules which don't have their dedicated page yet" ===
367
        // https://wiki.xenproject.org/wiki/Xen_Networking
368
        // https://mcpmag.com/articles/2007/11/27/hey-vm-whats-your-hypervisor.aspx
369
        // https://www.techrepublic.com/blog/data-center/mac-address-scorecard-for-common-virtual-machine-platforms
370
        if (mac_between($mac, '00:16:3E:00:00:00', '00:16:3E:FF:FF:FF')) $vm = "Red Hat Xen, XenSource, Novell Xen";
371
        // http://techgenix.com/mac-address-pool-duplication-hyper-v/
372
        // https://docs.microsoft.com/en-us/system-center/vmm/network-mac?view=sc-vmm-1807
373
        // https://blogs.technet.microsoft.com/gbanin/2014/08/27/how-to-solve-mac-address-conflict-on-hyper-v/
374
        if (mac_between($mac, '00:1D:D8:B7:1C:00', '00:1D:D8:F4:1F:FF')) $vm = "Microsoft SCVMM (System Center Virtual Machine Manager)";
375
        // https://mcpmag.com/articles/2007/11/27/hey-vm-whats-your-hypervisor.aspx
376
        // https://www.techrepublic.com/blog/data-center/mac-address-scorecard-for-common-virtual-machine-platforms/
377
        // https://blogs.technet.microsoft.com/medv/2011/01/24/how-to-manage-vm-mac-addresses-with-the-globalimagedata-xml-file-in-med-v-v1/
378
        if (mac_between($mac, '00:03:FF:00:00:00', '00:03:FF:FF:FF:FF')) $vm = "Microsoft Virtual PC / Virtual Server";
379
        // https://mcpmag.com/articles/2007/11/27/hey-vm-whats-your-hypervisor.aspx
380
        if (mac_between($mac, '00:18:51:00:00:00', '00:18:51:FF:FF:FF')) $vm = "SWsoft";
381
        // https://macaddress.io/statistics/company/17619
382
        if (mac_between($mac, '58:9C:FC:00:00:00', '58:9C:FC:FF:FF:FF')) $vm = "bhyve by FreebsdF";
383
        // https://macaddress.io/statistics/company/17388
384
        if (mac_between($mac, '50:6B:8D:00:00:00', '50:6B:8D:FF:FF:FF')) $vm = "Nutanix AHV";
385
        // https://www.centos.org/forums/viewtopic.php?t=26739
386
        if (mac_between($mac, '54:52:00:00:00:00', '54:52:FF:FF:FF:FF')) $vm = "KVM (proxmox)";
387
        // Self tested (alldatafeeds.com)
388
        if (mac_between($mac, '96:00:00:00:00:00', '96:00:FF:FF:FF:FF')) $vm = "Hetzner vServer (based on KVM and libvirt)";
389
        // === FAQ "How to recognise a VMware's virtual machine by its MAC address?" ===
390
        if (mac_between($mac, '00:50:56:00:00:00', '00:50:56:FF:FF:FF')) $vm = "VMware vSphere, VMware Workstation, VMware ESX Server";
391
        if (mac_between($mac, '00:50:56:80:00:00', '00:50:56:BF:FF:FF')) $vm = "VMware vSphere managed by vCenter Server";
392
        if (mac_between($mac, '00:0C:29:00:00:00', '00:0C:29:FF:FF:FF')) $vm = "VMWare Standalone VMware vSphere, VMware Workstation, VMware Horizon";
393
        if (mac_between($mac, '00:05:69:00:00:00', '00:05:69:FF:FF:FF')) $vm = "VMware ESX, VMware GSX Server";
394
        if (mac_between($mac, '00:1C:14:00:00:00', '00:1C:14:FF:FF:FF')) $vm = "VMWare";
395
        // === FAQ "machine by its MAC address?" ===
396
        if (mac_between($mac, '00:1C:42:00:00:00', '00:1C:42:FF:FF:FF')) $vm = "Parallels Virtual Machine";
397
        // === FAQ "How to recognise a Docker container by its MAC address?" ===
398
        if (mac_between($mac, '02:42:00:00:00:00', '02:42:FF:FF:FF:FF')) $vm = "Docker container";
399
        // === FAQ =How to recognise a Microsoft Hyper-V's virtual machine by its MAC address?" ===
400
        if (mac_between($mac, '00:15:5D:00:00:00', '00:15:5D:FF:FF:FF')) $vm = "Microsoft Hyper-V";
401
        // === FAQ "How to recognise an Oracle Virtual machine by its MAC address?" ===
402
        if (mac_between($mac, '08:00:27:00:00:00', '08:00:27:FF:FF:FF')) $vm = "Oracle VirtualBox 5.2"; // Pcs Systemtechnik GmbH
403
        if (mac_between($mac, '52:54:00:00:00:00', '52:54:00:FF:FF:FF')) $vm = "Oracle VirtualBox 5.2 + Vagrant"; // 52:54:00 (Exact MAC: 52:54:00:C9:C7:04)
404
        if (mac_between($mac, '00:21:F6:00:00:00', '00:21:F6:FF:FF:FF')) $vm = "Oracle VirtualBox 3.3";
405
        if (mac_between($mac, '00:14:4F:00:00:00', '00:14:4F:FF:FF:FF')) $vm = "Oracle VM Server for SPARC";
406
        if (mac_between($mac, '00:0F:4B:00:00:00', '00:0F:4B:FF:FF:FF')) $vm = "Oracle Virtual Iron 4";
2 daniel-mar 407
 
15 daniel-mar 408
        if ($vm) {
409
                echo sprintf("%-32s %s\n", "Special use:", "Virtual machine $vm");
410
        }
2 daniel-mar 411
 
15 daniel-mar 412
        $app = '';
413
 
414
        // === FAQ "Other MAC address applications"
415
        // http://www.cavebear.com/archive/cavebear/Ethernet/Ethernet.txt
416
        // https://tools.ietf.org/html/rfc1060
417
        if (mac_between($mac, '03:00:00:01:00:00', '03:00:40:00:00:00')) $app = 'User-defined (per 802 spec), EtherType is 0x0802';
418
        if (mac_equals($mac, '01:00:1D:00:00:00')) $app = 'Cabletron PC-OV PC discover (on demand), EtherType is 0x0802';
419
        if (mac_equals($mac, '01:00:1D:42:00:00')) $app = 'Cabletron PC-OV Bridge discover (on demand), EtherType is 0x0802';
420
        if (mac_equals($mac, '01:00:1D:52:00:00')) $app = 'Cabletron PC-OV MMAC discover (on demand), EtherType is 0x0802';
421
        if (mac_between($mac, '01:00:3C:00:00:00' , '01:00:3C:FF:FF:FF')) $app = 'Auspex Systems (Serverguard)';
422
        if (mac_equals($mac, '01:00:10:00:00:20')) $app = 'Hughes Lan Systems Terminal Server S/W download, EtherType is 0x0802';
423
        if (mac_equals($mac, '01:00:10:FF:FF:20')) $app = 'Hughes Lan Systems Terminal Server S/W request, EtherType is 0x0802';
424
        if (mac_equals($mac, '01:00:81:00:00:00')) $app = 'Synoptics Network Management';
425
        if (mac_equals($mac, '01:00:81:00:00:02')) $app = 'Synoptics Network Management';
426
        if (mac_equals($mac, '01:00:81:00:01:00')) $app = 'Bay Networks (Synoptics) autodiscovery, EtherType is 0x0802 SNAP type is 0x01A2';
427
        if (mac_equals($mac, '01:00:81:00:01:01')) $app = 'Bay Networks (Synoptics) autodiscovery, EtherType is 0x0802 SNAP type is 0x01A1';
428
        if (mac_between($mac, '01:20:25:00:00:00', '01:20:25:7F:FF:FF')) $app = 'Control Technology Inc\'s Industrial Ctrl Proto., EtherType is 0x873A';
429
        if (mac_equals($mac, '01:80:24:00:00:00')) $app = 'Kalpana Etherswitch every 60 seconds, EtherType is 0x0802';
430
        if (mac_equals($mac, '01:DD:00:FF:FF:FF')) $app = 'Ungermann-Bass boot-me requests, EtherType is 0x7002';
431
        if (mac_equals($mac, '01:DD:01:00:00:00')) $app = 'Ungermann-Bass Spanning Tree, EtherType is 0x7005';
432
        if (mac_equals($mac, '03:00:00:00:00:10')) $app = 'OS/2 1.3 EE + Communications Manager, EtherType is 0x80D5';
433
        if (mac_equals($mac, '03:00:00:00:00:40')) $app = 'OS/2 1.3 EE + Communications Manager, EtherType is 0x80D5';
434
        if (mac_equals($mac, '03:00:00:00:01:00')) $app = 'OSI All-IS Multicast, EtherType is 0x0802';
435
        if (mac_equals($mac, '03:00:00:00:02:00')) $app = 'OSI All-ES Multicast, EtherType is 0x0802';
436
        if (mac_equals($mac, '03:00:00:80:00:00')) $app = 'Discovery Client, EtherType is 0x0802';
437
        if (mac_equals($mac, '03:00:FF:FF:FF:FF')) $app = 'All Stations address, EtherType is 0x0802';
438
        if (mac_between($mac, '09:00:0D:00:00:00', '09:00:0D:FF:FF:FF')) $app = 'ICL Oslan Multicast, EtherType is 0x0802';
439
        if (mac_equals($mac, '09:00:0D:02:00:00')) $app = 'ICL Oslan Service discover only on boot';
440
        if (mac_equals($mac, '09:00:0D:02:0A:3C')) $app = 'ICL Oslan Service discover only on boot';
441
        if (mac_equals($mac, '09:00:0D:02:0A:38')) $app = 'ICL Oslan Service discover only on boot';
442
        if (mac_equals($mac, '09:00:0D:02:0A:39')) $app = 'ICL Oslan Service discover only on boot';
443
        if (mac_equals($mac, '09:00:0D:02:FF:FF')) $app = 'ICL Oslan Service discover only on boot';
444
        if (mac_equals($mac, '09:00:0D:09:00:00')) $app = 'ICL Oslan Service discover as required';
445
        if (mac_equals($mac, '09:00:1E:00:00:00')) $app = 'Apollo DOMAIN, EtherType is 0x8019';
446
        if (mac_equals($mac, '09:00:02:04:00:01')) $app = 'Vitalink printer messages, EtherType is 0x8080';
447
        if (mac_equals($mac, '09:00:02:04:00:02')) $app = 'Vitalink bridge management, EtherType is 0x8080';
448
        if (mac_equals($mac, '09:00:4C:00:00:0F')) $app = 'BICC Remote bridge adaptive routing (e.g. to Retix), EtherType is 0x0802';
449
        if (mac_equals($mac, '09:00:4E:00:00:02')) $app = 'Novell IPX, EtherType is 0x8137';
450
        if (mac_equals($mac, '09:00:6A:00:01:00')) $app = 'TOP NetBIOS';
451
        if (mac_equals($mac, '09:00:7C:01:00:01')) $app = 'Vitalink DLS Multicast';
452
        if (mac_equals($mac, '09:00:7C:01:00:03')) $app = 'Vitalink DLS Inlink';
453
        if (mac_equals($mac, '09:00:7C:01:00:04')) $app = 'Vitalink DLS and non DLS Multicast';
454
        if (mac_equals($mac, '09:00:7C:02:00:05')) $app = 'Vitalink diagnostics, EtherType is 0x8080';
455
        if (mac_equals($mac, '09:00:7C:05:00:01')) $app = 'Vitalink gateway, EtherType is 0x8080';
456
        if (mac_equals($mac, '09:00:7C:05:00:02')) $app = 'Vitalink Network Validation Message';
457
        if (mac_equals($mac, '09:00:09:00:00:01')) $app = 'HP Probe, EtherType is 0x8005 or 0x0802';
458
        if (mac_equals($mac, '09:00:09:00:00:04')) $app = 'HP DTC, EtherType is 0x8005';
459
        if (mac_equals($mac, '09:00:26:01:00:01')) $app = 'Vitalink TransLAN bridge management, EtherType is 0x8038';
460
        if (mac_equals($mac, '09:00:39:00:70:00')) $app = 'Spider Systems Bridge';
461
        if (mac_between($mac, '09:00:56:00:00:00', '09:00:56:FE:FF:FF')) $app = 'Stanford reserved';
462
        if (mac_between($mac, '09:00:56:FF:00:00', '09:00:56:FF:FF:FF')) $app = 'Stanford V Kernel, version 6.0, EtherType is 0x805C';
463
        if (mac_equals($mac, '09:00:77:00:00:00')) $app = 'Retix Bridge Local Management System, EtherType is 0x0802';
464
        if (mac_equals($mac, '09:00:77:00:00:01')) $app = 'Retix spanning tree bridges, EtherType is 0x0802';
465
        if (mac_equals($mac, '09:00:77:00:00:02')) $app = 'Retix Bridge Adaptive routing, EtherType is 0x0802';
466
        if (mac_equals($mac, '09:00:87:80:FF:FF')) $app = 'Xyplex Terminal Servers, EtherType is 0x0889';
467
        if (mac_equals($mac, '09:00:87:90:FF:FF')) $app = 'Xyplex Terminal Servers, EtherType is 0x0889';
468
        if (mac_between($mac, '44:38:39:FF:00:00', '44:38:39:FF:FF:FF')) $app = 'Multi-Chassis Link Aggregation (Cumulus Linux)';
469
        if (mac_equals($mac, 'FF:FF:00:40:00:01')) $app = 'LANtastic, EtherType is 0x81D6';
470
        if (mac_equals($mac, 'FF:FF:00:60:00:04')) $app = 'LANtastic, EtherType is 0x81D6';
471
        if (mac_equals($mac, 'FF:FF:01:E0:00:04')) $app = 'LANtastic';
472
 
473
        // === FAQ "The "CF" series MAC addresses" ===
474
        // https://www.iana.org/assignments/ppp-numbers/ppp-numbers.xhtml
475
        // https://tools.ietf.org/html/rfc2153
476
        // https://tools.ietf.org/html/rfc7042#section-2.3.2
477
        if (mac_between($mac, 'CF:00:00:00:00:00', 'CF:00:00:FF:FF:FF')) $app = 'Reserved';
478
        if (mac_equals($mac, 'CF:00:00:00:00:00')) $app = 'Used for Ethernet loopback tests';
479
 
480
        // === FAQ "How to recognise a Broadcast MAC address application?" ===
481
        if (mac_equals($mac, 'FF:FF:FF:FF:FF:FF')) echo sprintf("%-32s %s\n", "Special use:", "Broadcast messaging");
482
 
483
        // === FAQ "How to recognise a Virtual Router ID by MAC address?" ===
484
        // https://tools.ietf.org/html/rfc7042#section-5.1
485
        // https://tools.ietf.org/html/rfc5798
486
        if (mac_between($mac, '00:00:5E:00:01:00', '00:00:5E:00:01:FF')) $app = 'IPv4 Virtual Router Redundancy Protocol  (VRRP)';
487
        if (mac_between($mac, '00:00:5E:00:02:00', '00:00:5E:00:02:FF')) $app = 'IPv6 Virtual Router Redundancy Protocol';
488
 
489
        // === FAQ "How to recognise an IP frame by MAC address?" ===
490
        // https://tools.ietf.org/html/rfc1060
491
        // https://en.wikipedia.org/wiki/Multicast_address#cite_note-15
492
        // https://tools.ietf.org/html/rfc2464
493
        // https://www.iana.org/go/rfc1112
494
        // http://www.cavebear.com/archive/cavebear/Ethernet/Ethernet.txt
495
        if (mac_between($mac, '01:00:5E:00:00:00', '01:00:5E:7F:FF:FF')) $app = 'IPv4 Multicast (EtherType is 0x0800)';
496
        if (mac_between($mac, '33:33:00:00:00:00', '33:33:FF:FF:FF:FF')) $app = 'IPv6 Multicast. IPv6 neighbor discovery (EtherType is 0x86DD)'; // TODO: Dabei werden die untersten 32 Bit der IPv6-Multicast-Adresse in die MAC-Adresse eingebettet.
497
        if (mac_between($mac, '00:00:5E:00:52:13', '00:00:5E:00:52:13')) $app = 'Proxy Mobile IPv6';
16 daniel-mar 498
        if (mac_between($mac, '00:00:5E:FE:C0:00:02:00', '00:00:5E:FE:C0:00:02:FF')) $app = 'IPv4 derived documentation';
499
        if (mac_between($mac, '00:00:5E:FE:C6:33:64:00', '00:00:5E:FE:C6:33:64:FF')) $app = 'IPv4 derived documentation';
500
        if (mac_between($mac, '00:00:5E:FE:CB:00:71:00', '00:00:5E:FE:CB:00:71:FF')) $app = 'IPv4 derived documentation';
501
        if (mac_equals($mac, '00:00:5E:FE:EA:C0:00:02')) $app = 'IPv4 multicast derived documentation';
502
        if (mac_equals($mac, '00:00:5E:FE:EA:C6:33:64')) $app = 'IPv4 multicast derived documentation';
503
        if (mac_equals($mac, '00:00:5E:FE:EA:CB:00:71')) $app = 'IPv4 multicast derived documentation';
504
        if (mac_between($mac, '01:00:5E:FE:C0:00:02:00', '01:00:5E:FE:C0:00:02:FF')) $app = 'IPv4 derived documentation';
505
        if (mac_between($mac, '01:00:5E:FE:C6:33:64:00', '01:00:5E:FE:C6:33:64:FF')) $app = 'IPv4 derived documentation';
506
        if (mac_between($mac, '01:00:5E:FE:CB:00:71:00', '01:00:5E:FE:CB:00:71:FF')) $app = 'IPv4 derived documentation';
507
        if (mac_equals($mac, '01:00:5E:FE:EA:C0:00:02')) $app = 'IPv4 multicast derived documentation';
508
        if (mac_equals($mac, '01:00:5E:FE:EA:C6:33:64')) $app = 'IPv4 multicast derived documentation';
509
        if (mac_equals($mac, '01:00:5E:FE:EA:CB:00:71')) $app = 'IPv4 multicast derived documentation';
15 daniel-mar 510
        if (mac_between($mac, '01:80:C2:00:00:20', '01:80:C2:00:00:2F')) $app = 'Reserved for use by Multiple Registration Protocol (MRP) applications';
16 daniel-mar 511
        if (mac_between($mac, '02:00:5E:FE:00:00:00:00', '02:00:5E:FE:FF:FF:FF:FF')) $app = 'IPv4 Addr Holders';
15 daniel-mar 512
        if (mac_equals($mac, '03:00:00:20:00:00')) $app = 'IP multicast address';
513
        if (mac_equals($mac, 'C0:00:00:04:00:00')) $app = 'IP multicast address';
16 daniel-mar 514
        if (mac_between($mac, '03:00:5E:FE:00:00:00:00', '03:00:5E:FE:FF:FF:FF:FF')) $app = 'IPv4 Addr Holders';
15 daniel-mar 515
 
516
        // === FAQ "How to recognise a MPLS multicast frame by MAC address?" ===
517
        // http://www.iana.org/go/rfc5332
518
        // http://www.iana.org/go/rfc7213
519
        if (mac_between($mac, '01:00:5E:80:00:00', '01:00:5E:8F:FF:FF')) $app = 'MPLS multicast (EtherType is 0x8847 or 0x8848)';
520
        if (mac_equals($mac, '01:00:5E:90:00:00')) $app = 'MPLS-TP p2p';
521
 
522
        // === FAQ "How to recognise a Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) interfaces by MAC address?" ===
523
        // http://www.iana.org/go/rfc7130
524
        if (mac_equals($mac, '01:00:5E:90:00:01')) $app = 'Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) interfaces';
525
 
526
        // === FAQ "How to recognise Token Ring specific functions by MAC address?" ===
527
        // https://tools.ietf.org/html/rfc1060
528
        // https://tools.ietf.org/html/rfc1469
529
        // https://standards.ieee.org/products-services/regauth/grpmac/public.html
530
        // https://tools.ietf.org/html/rfc2470
531
        // http://www.cavebear.com/archive/cavebear/Ethernet/Ethernet.txt
532
        if (mac_equals($mac, '03:00:00:00:00:01')) $app = 'NetBIOS (Token Ring)';
533
        if (mac_equals($mac, '03:00:00:00:00:02')) $app = 'Locate - Directory Server (Token Ring)';
534
        if (mac_equals($mac, '03:00:00:00:00:04')) $app = 'Synchronous Bandwidth Manager (Token Ring)';
535
        if (mac_equals($mac, '03:00:00:00:00:08')) $app = 'Configuration Report Server (Token Ring)';
536
        if (mac_equals($mac, '03:00:00:00:00:10')) $app = 'Ring Error Monitor (Token Ring)';
537
        if (mac_equals($mac, '03:00:00:00:00:20')) $app = 'Network Server Heartbeat (Token Ring)';
538
        if (mac_equals($mac, '03:00:00:00:00:40')) $app = 'Ring Parameter Monitor (Token Ring)';
539
        if (mac_equals($mac, '03:00:00:00:00:80')) $app = 'Active Monitor (Token Ring)';
540
        if (mac_equals($mac, '03:00:00:00:04:00')) $app = 'LAN Manager (Token Ring)';
541
        if (mac_equals($mac, '03:00:00:00:08:00')) $app = 'Ring Wiring Concentrator (Token Ring)';
542
        if (mac_equals($mac, '03:00:00:00:10:00')) $app = 'LAN Gateway (Token Ring)';
543
        if (mac_equals($mac, '03:00:00:00:20:00')) $app = 'Ring Authorization Server (Token Ring)';
544
        if (mac_equals($mac, '03:00:00:00:40:00')) $app = 'IMPL Server (Token Ring)';
545
        if (mac_equals($mac, '03:00:00:00:80:00')) $app = 'Bridge (Token Ring)';
546
        if (mac_equals($mac, '03:00:00:20:00:00')) $app = 'Single Token-Ring functional address';
547
        if (mac_equals($mac, '03:00:00:00:00:08')) $app = 'Configuration Report Server (CRS) MAC Group address';
548
        if (mac_equals($mac, '03:00:00:00:00:10')) $app = 'Ring Error Monitor (REM) MAC Group address';
549
        if (mac_equals($mac, '03:00:00:00:00:40')) $app = 'Ring Parameter Server (RPS) MAC group address';
550
        if (mac_equals($mac, '03:00:00:00:01:00')) $app = 'All Intermediate System Network Entities address';
551
        if (mac_equals($mac, '03:00:00:00:02:00')) $app = 'All End System Network Entities address, and Lobe Media Test (LMT) MAC group address';
552
        if (mac_equals($mac, '03:00:00:00:04:00')) $app = 'Generic address for all Manager Stations';
553
        if (mac_equals($mac, '03:00:00:00:08:00')) $app = 'All CONs SNARES address';
554
        if (mac_equals($mac, '03:00:00:00:10:00')) $app = 'All CONs End System address';
555
        if (mac_equals($mac, '03:00:00:00:20:00')) $app = 'Loadable Device Generic address';
556
        if (mac_equals($mac, '03:00:00:00:40:00')) $app = 'Load Server Generic address';
557
        if (mac_equals($mac, '03:00:00:40:00:00')) $app = 'Generic address for all Agent Stations';
558
        if (mac_equals($mac, 'C0:00:00:04:00:00')) $app = 'Single Token-Ring functional address';
559
        if (mac_equals($mac, '03:00:80:00:00:00')) $app = 'IPv6 multicast over Token Ring: all-Nodes (FF01::1 and FF02::1) and solicited node (FF02:0:0:0:0:1:FFXX:XXXX) addresses';
560
        if (mac_equals($mac, '03:00:40:00:00:00')) $app = 'IPv6 multicast over Token Ring: all-Routers addresses (FF0X::2)';
561
        if (mac_equals($mac, '03:00:00:80:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 000';
562
        if (mac_equals($mac, '03:00:00:40:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 001';
563
        if (mac_equals($mac, '03:00:00:20:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 010';
564
        if (mac_equals($mac, '03:00:00:10:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 011';
565
        if (mac_equals($mac, '03:00:00:08:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 100';
566
        if (mac_equals($mac, '03:00:00:04:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 101';
567
        if (mac_equals($mac, '03:00:00:02:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 110';
568
        if (mac_equals($mac, '03:00:00:01:00:00')) $app = 'IPv6 multicast over Token Ring: any other multicast address with three least significant bits = 111';
569
 
570
        // === FAQ "How to recognise an AppleTalk protocols by MAC address?" ===
571
        // https://tools.ietf.org/html/rfc1060
572
        // http://www.cavebear.com/archive/cavebear/Ethernet/Ethernet.txt
573
        if (mac_between($mac, '09:00:07:00:00:00', '09:00:07:00:00:FC')) $app = 'AppleTalk zone multicast addresses (EtherType is 0x0802)';
574
        if (mac_equals($mac, '09:00:07:FF:FF:FF')) $app = 'AppleTalk broadcast address (EtherType is 0x0802)';
575
 
576
        // === FAQ "How to recognise a TRILL protocols by MAC address?" ===
577
        // http://www.iana.org/go/rfc7455
578
        // https://tools.ietf.org/html/draft-ietf-trill-oam-framework-04
579
        // https://standards.ieee.org/products-services/regauth/grpmac/public.html
580
        // https://tools.ietf.org/html/rfc7455#appendix-C
581
        if (mac_between($mac, '00:00:5E:90:01:00', '00:00:5E:90:01:00')) $app = 'TRILL OAM';
582
        if (mac_equals($mac, '01:00:5E:90:01:00')) $app = 'TRILL OAM';
583
        if (mac_between($mac, '01:80:C2:00:00:40', '01:80:C2:00:00:4F')) $app = 'Group MAC addresses used by the TRILL protocols';
584
 
585
        // === FAQ "How to recognise an IEEE 802.1X MAC address application?" ===
586
        if (mac_between($mac, '01:0C:CD:01:00:00', '01:0C:CD:01:01:FF')) $app = 'IEC 61850-8-1 GOOSE Type 1/1A, EtherType is 0x88B8';
587
        if (mac_between($mac, '01:0C:CD:02:00:00', '01:0C:CD:02:01:FF')) $app = 'GSSE (IEC 61850 8-1), EtherType is 0x88B9';
588
        if (mac_between($mac, '01:0C:CD:04:00:00', '01:0C:CD:04:01:FF')) $app = 'Multicast sampled values (IEC 61850 8-1), EtherType is 0x88BA';
589
        if (mac_equals($mac, '01:1B:19:00:00:00')) $app = 'General group address - An 802.1Q VLAN Bridge would forward the frame unchanged.';
590
        if (mac_equals($mac, '01:1B:19:00:00:00')) $app = 'Precision Time Protocol (PTP) version 2 over Ethernet, EtherType is 0x88F7';
591
        if (mac_equals($mac, '01:80:C2:00:00:00')) $app = 'Bridge Group address Nearest Customer Bridge group address';
592
        if (mac_equals($mac, '01:80:C2:00:00:00')) $app = 'Spanning Tree Protocol (for bridges) IEEE 802.1D, EtherType is 0x0802';
593
        if (mac_equals($mac, '01:80:C2:00:00:00')) $app = 'Link Layer Discovery Protocol, EtherType is 0x88CC';
594
        if (mac_between($mac, '01:80:C2:00:00:00', '01:80:C2:00:00:0F')) $app = 'The initial bridging/link protocols block';
595
        if (mac_between($mac, '01:80:C2:00:00:00', '01:80:C2:00:00:0F')) $app = 'IEEE 802.1D MAC Bridge Filtered MAC Group Addresses';
596
        if (mac_between($mac, '01:80:C2:00:00:00', '01:80:C2:00:00:0F')) $app = 'IEEE Pause, 802.3x';
597
        if (mac_equals($mac, '01:80:C2:00:00:0A')) $app = 'Reserved for future standardization';
598
        if (mac_equals($mac, '01:80:C2:00:00:0B')) $app = 'EDE-SS PEP Address';
599
        if (mac_equals($mac, '01:80:C2:00:00:0C')) $app = 'Reserved for future standardization';
600
        if (mac_equals($mac, '01:80:C2:00:00:0D')) $app = 'Provider Bridge MVRP address';
601
        if (mac_equals($mac, '01:80:C2:00:00:0E')) $app = 'Individual LAN Scope group address, It is intended that no IEEE 802.1 relay device will be defined that will forward frames that carry this destination address';
602
        if (mac_equals($mac, '01:80:C2:00:00:0E')) $app = 'Nearest Bridge group address';
603
        if (mac_equals($mac, '01:80:C2:00:00:0E')) $app = 'Link Layer Discovery Protocol, EtherType is 0x88CC';
604
        if (mac_equals($mac, '01:80:C2:00:00:0E')) $app = 'Precision Time Protocol (PTP) version 2 over Ethernet, EtherType is 0x88F7';
605
        if (mac_equals($mac, '01:80:C2:00:00:01')) $app = 'IEEE MAC-specific Control Protocols group address';
606
        if (mac_equals($mac, '01:80:C2:00:00:01')) $app = 'Ethernet flow control (Pause frame) IEEE 802.3x, EtherType is 0x8808';
607
        if (mac_equals($mac, '01:80:C2:00:00:1A')) $app = 'Generic Address for All Agent Stations';
608
        if (mac_equals($mac, '01:80:C2:00:00:1B')) $app = 'All Multicast Capable End Systems address';
609
        if (mac_equals($mac, '01:80:C2:00:00:1C')) $app = 'All Multicast Announcements address';
610
        if (mac_equals($mac, '01:80:C2:00:00:1D')) $app = 'All Multicast Capable Intermediate Systems address';
611
        if (mac_equals($mac, '01:80:C2:00:00:1E')) $app = 'All DTR Concentrators MAC group address';
612
        if (mac_equals($mac, '01:80:C2:00:00:1F')) $app = 'EDE-CC PEP Address';
613
        if (mac_between($mac, '01:80:C2:00:00:01', '01:80:C2:00:00:0F')) $app = '802.1 alternate Spanning multicast, EtherType is 0x0802';
614
        if (mac_equals($mac, '01:80:C2:00:00:02')) $app = 'Ethernet OAM Protocol IEEE 802.3ah (also known as "slow protocols"), EtherType is 0x8809';
615
        if (mac_equals($mac, '01:80:C2:00:00:03')) $app = 'Nearest non-TPMR Bridge group address IEEE Std 802.1X PAE address';
616
        if (mac_equals($mac, '01:80:C2:00:00:03')) $app = 'Link Layer Discovery Protocol, EtherType is 0x88CC';
617
        if (mac_equals($mac, '01:80:C2:00:00:04')) $app = 'IEEE MAC-specific Control Protocols group address';
618
        if (mac_equals($mac, '01:80:C2:00:00:05')) $app = 'Reserved for future standardization';
619
        if (mac_equals($mac, '01:80:C2:00:00:06')) $app = 'Reserved for future standardization';
620
        if (mac_equals($mac, '01:80:C2:00:00:07')) $app = 'MEF Forum ELMI protocol group address';
621
        if (mac_equals($mac, '01:80:C2:00:00:08')) $app = 'Provider Bridge group address';
622
        if (mac_equals($mac, '01:80:C2:00:00:08')) $app = 'Spanning Tree Protocol (for provider bridges) IEEE 802.1ad, EtherType is 0x0802';
623
        if (mac_equals($mac, '01:80:C2:00:00:09')) $app = 'Reserved for future standardization';
624
        if (mac_equals($mac, '01:80:C2:00:00:10')) $app = 'All LANs Bridge Management group address (deprecated)';
625
        if (mac_equals($mac, '01:80:C2:00:00:10')) $app = 'Bridge Management, EtherType is 0x0802';
626
        if (mac_equals($mac, '01:80:C2:00:00:11')) $app = 'Load Server generic address';
627
        if (mac_equals($mac, '01:80:C2:00:00:11')) $app = 'Load Server, EtherType is 0x0802';
628
        if (mac_equals($mac, '01:80:C2:00:00:12')) $app = 'Loadable Device generic address';
629
        if (mac_equals($mac, '01:80:C2:00:00:12')) $app = 'Loadable Device, EtherType is 0x0802';
630
        if (mac_equals($mac, '01:80:C2:00:00:13')) $app = 'Transmission of IEEE 1905.1 control packets';
631
        if (mac_equals($mac, '01:80:C2:00:00:14')) $app = 'All Level 1 Intermediate Systems address';
632
        if (mac_equals($mac, '01:80:C2:00:00:14')) $app = 'OSI Route level 1 (within area), EtherType is 0x0802';
633
        if (mac_equals($mac, '01:80:C2:00:00:15')) $app = 'All Level 2 Intermediate Systems address';
634
        if (mac_equals($mac, '01:80:C2:00:00:15')) $app = 'OSI Route level 2 (between area), EtherType is 0x0802';
635
        if (mac_equals($mac, '01:80:C2:00:00:16')) $app = 'All CONS End Systems address';
636
        if (mac_equals($mac, '01:80:C2:00:00:17')) $app = 'All CONS SNARES address';
637
        if (mac_equals($mac, '01:80:C2:00:00:18')) $app = 'Generic address for All Manager Stations';
638
        if (mac_equals($mac, '01:80:C2:00:00:19')) $app = 'Groupcast with retries (GCR) MAC group address';
639
        if (mac_between($mac, '01:80:C2:00:00:20', '01:80:C2:00:00:2F')) $app = 'Reserved for use by Multiple Registration Protocol (MRP) applications';
640
        if (mac_equals($mac, '01:80:C2:00:00:21')) $app = 'GARP VLAN Registration Protocol (also known as IEEE 802.1q GVRP), EtherType is 0x88f5';
641
        if (mac_between($mac, '01:80:C2:00:00:30', '01:80:C2:00:00:3F')) $app = 'Destination group MAC addresses for CCM and Linktrace messages';
642
        if (mac_between($mac, '01:80:C2:00:00:30', '01:80:C2:00:00:3F')) $app = 'Ethernet CFM Protocol IEEE 802.1ag, EtherType is 0x8902';
643
        if (mac_between($mac, '01:80:C2:00:00:50', '01:80:C2:00:00:FF')) $app = 'Unassigned standard group MAC address';
644
        if (mac_equals($mac, '01:80:C2:00:01:00')) $app = 'Ring Management Directed Beacon multicast address';
645
        if (mac_equals($mac, '01:80:C2:00:01:00')) $app = 'FDDI RMT Directed Beacon, EtherType is 0x0802';
646
        if (mac_between($mac, '01:80:C2:00:01:01', '01:80:C2:00:01:0F')) $app = 'Assigned to ISO/IEC JTC1/SC25 for future use';
647
        if (mac_equals($mac, '01:80:C2:00:01:10')) $app = 'Status Report Frame Status Report Protocol multicast address';
648
        if (mac_equals($mac, '01:80:C2:00:01:10')) $app = 'FDDI status report frame, EtherType is 0x0802';
649
        if (mac_between($mac, '01:80:C2:00:01:11', '01:80:C2:00:01:1F')) $app = 'Assigned to ISO/IEC JTC1/SC25 for future use';
650
        if (mac_equals($mac, '01:80:C2:00:01:20')) $app = 'All FDDI Concentrator MACs';
651
        if (mac_between($mac, '01:80:C2:00:01:21', '01:80:C2:00:01:2F')) $app = 'Assigned to ISO/IEC JTC1/SC25 for future use';
652
        if (mac_equals($mac, '01:80:C2:00:01:30')) $app = 'Synchronous Bandwidth Allocation address';
653
        if (mac_between($mac, '01:80:C2:00:01:31', '01:80:C2:00:01:FF')) $app = 'Assigned to ISO/IEC JTC1/SC25 for future use';
654
        if (mac_between($mac, '01:80:C2:00:02:00', '01:80:C2:00:02:FF')) $app = 'Assigned to ETSI for future use';
655
        if (mac_between($mac, '01:80:C2:00:03:00', '01:80:C2:FF-FF-FF')) $app = 'Unassigned standard group MAC address';
656
        if (mac_equals($mac, '09:00:4C:00:00:00')) $app = 'BICC 802.1 management, EtherType is 0x0802';
657
        if (mac_equals($mac, '09:00:4C:00:00:0C')) $app = 'BICC Remote bridge STA 802.1(D) Rev8, EtherType is 0x0802';
658
        if (mac_equals($mac, '09:00:4C:00:00:02')) $app = 'BICC 802.1 management, EtherType is 0x0802';
659
        if (mac_equals($mac, '09:00:4C:00:00:06')) $app = 'BICC Local bridge STA 802.1(D) Rev6, EtherType is 0x0802';
660
        if (mac_between($mac, '33:33:00:00:00:00', '33:33:FF:FF:FF:FF')) $app = 'IPv6 multicast, EtherType is 0x86DD';
661
 
662
        // === FAQ "How to recognise an ISO 9542 ES-IS protocol's MAC address application?" ===
663
        // https://standards.ieee.org/products-services/regauth/grpmac/public.html
664
        if (mac_equals($mac, '09:00:2B:00:00:04')) $app = 'All End System Network Entities address';
665
        if (mac_equals($mac, '09:00:2B:00:00:05')) $app = 'All Intermediate System Network Entities address';
666
 
667
        // === FAQ "How to recognise an IANA MAC address application?" ===
668
        // https://www.iana.org/assignments/ethernet-numbers/ethernet-numbers.xhtml
669
        // http://www.iana.org/go/rfc7042
670
        // https://tools.ietf.org/html/rfc1060
671
        if (mac_between($mac, '00:00:5E:00-52:14', '00:00:5E:00:52:FF')) $app = 'Unassigned (small allocations)';
672
        if (mac_between($mac, '00:00:5E:00:00:00', '00:00:5E:00:00:FF')) $app = 'Reserved and require IESG Ratification for assignment';
673
        if (mac_between($mac, '00:00:5E:00:03:00', '00:00:5E:00:51:FF')) $app = 'Unassigned';
674
        if (mac_between($mac, '00:00:5E:00:52:00', '00:00:5E:00:52:FF')) $app = 'Is used for very small assignments. Currently, 3 out of these 256 values have been assigned.';
675
        if (mac_between($mac, '00:00:5E:00:52:00', '00:00:5E:00:52:00')) $app = 'PacketPWEthA';
676
        if (mac_between($mac, '00:00:5E:00:52:01', '00:00:5E:00:52:01')) $app = 'PacketPWEthB';
677
        if (mac_between($mac, '00:00:5E:00:52:02', '00:00:5E:00:52:12')) $app = 'Unassigned (small allocations)';
678
        if (mac_between($mac, '00:00:5E:00:53:00', '00:00:5E:00:53:FF')) $app = 'Assigned for use in documentation';
679
        if (mac_between($mac, '00:00:5E:00:54:00', '00:00:5E:90:00:FF')) $app = 'Unassigned';
680
        if (mac_between($mac, '00:00:5E:90:01:01', '00:00:5E:90:01:FF')) $app = 'Unassigned (small allocations requiring both unicast and multicast)';
16 daniel-mar 681
        if (mac_between($mac, '00:00:5E:EF:10:00:00:00', '00:00:5E:EF:10:00:00:FF')) $app = 'General documentation';
682
        if (mac_between($mac, '00:00:5E:FF:FE:00:53:00', '00:00:5E:FF:FE:00:53:FF')) $app = 'EUI-48 derived documentation';
15 daniel-mar 683
        if (mac_between($mac, '01:00:5E:00:00:00', '01:00:5E:7F:FF:FF')) $app = 'DoD Internet Multicast (EtherType is 0x0800)'; // TODO: IPv4-Multicast  (Dabei werden dann die unteren 23 Bit der IP-Multicast-Adresse direkt auf die untersten 23 Bit der MAC-Adresse abgebildet. Der IP-Multicast-Adresse 224.0.0.1 ist somit die Multicast-MAC-Adresse 01-00-5e-00-00-01 fest zugeordnet.)
684
        if (mac_between($mac, '01:00:5E:80:00:00', '01:00:5E:FF:FF:FF')) $app = 'DoD Internet';
685
        if (mac_equals($mac, '01:00:5E:90:00:02')) $app = 'AllL1MI-ISs';
686
        if (mac_equals($mac, '01:00:5E:90:00:03')) $app = 'AllL2MI-ISs';
687
        if (mac_between($mac, '01:00:5E:90:00:04', '01:00:5E:90:00:FF')) $app = 'Unassigned (small allocations)';
688
        if (mac_between($mac, '01:00:5E:90:01:01', '01:00:5E:90:01:FF')) $app = 'Unassigned (small allocations requiring both unicast and multicast)';
689
        if (mac_between($mac, '01:00:5E:90:02:00', '01:00:5E:90:0F:FF')) $app = 'Unassigned';
690
        if (mac_between($mac, '01:00:5E:90:02:00', '00:00:5E:FF:FF:FF')) $app = 'Unassigned';
691
        if (mac_between($mac, '01:00:5E:90:10:00', '01:00:5E:90:10:FF')) $app = 'Documentation';
692
        if (mac_between($mac, '01:00:5E:90:11:00', '01:00:5E:FF:FF:FF')) $app = 'Unassigned';
16 daniel-mar 693
        if (mac_between($mac, '01:00:5E:EF:10:00:00:00', '01:00:5E:EF:10:00:00:FF')) $app = 'General documentation';
694
        if (mac_between($mac, '02:00:5E:00:00:00:00:00', '02:00:5E:0F:FF:FF:FF:FF')) $app = 'Reserved';
695
        if (mac_between($mac, '02:00:5E:10:00:00:00:00', '02:00:5E:10:00:00:00:FF')) $app = 'Documentation';
696
        if (mac_between($mac, '02:00:5E:10:00:00:01:00', '02:00:5E:EF:FF:FF:FF:FF')) $app = 'Unassigned';
697
        if (mac_between($mac, '02:00:5E:F0:00:00:00:00', '02:00:5E:FD:FF:FF:FF:FF')) $app = 'Reserved';
698
        if (mac_between($mac, '02:00:5E:FE:00:00:00:00', '02:00:5E:FE:FF:FF:FF:FF')) $app = 'IPv4 Addr Holders';
699
        if (mac_between($mac, '02:00:5E:FF:00:00:00:00', '02:00:5E:FF:FD:FF:FF:FF')) $app = 'Reserved';
700
        if (mac_between($mac, '02:00:5E:FF:FE:00:00:00', '02:00:5E:FF:FE:FF:FF:FF')) $app = 'IANA EUI-48 Holders';
701
        if (mac_between($mac, '02:00:5E:FF:FF:00:00:00', '02:00:5E:FF:FF:FF:FF:FF')) $app = 'Reserved';
702
        if (mac_between($mac, '03:00:5E:00:00:00:00:00', '03:00:5E:0F:FF:FF:FF:FF')) $app = 'Reserved';
703
        if (mac_between($mac, '03:00:5E:10:00:00:00:00', '03:00:5E:10:00:00:00:FF')) $app = 'Documentation';
704
        if (mac_between($mac, '03:00:5E:10:00:00:01:00', '03:00:5E:EF:FF:FF:FF:FF')) $app = 'Unassigned';
705
        if (mac_between($mac, '03:00:5E:F0:00:00:00:00', '03:00:5E:FD:FF:FF:FF:FF')) $app = 'Reserved';
706
        if (mac_between($mac, '03:00:5E:FF:00:00:00:00', '03:00:5E:FF:FD:FF:FF:FF')) $app = 'Reserved';
707
        if (mac_between($mac, '03:00:5E:FF:FE:00:00:00', '03:00:5E:FF:FE:FF:FF:FF')) $app = 'IANA EUI-48 Holders';
708
        if (mac_between($mac, '03:00:5E:FF:FF:00:00:00', '03:00:5E:FF:FF:FF:FF:FF')) $app = 'Reserved';
15 daniel-mar 709
 
710
        // === FAQ "How to recognise a Cisco's MAC address application?" ===
711
        // https://www.cisco.com/c/en/us/support/docs/switches/catalyst-4500-series-switches/13414-103.html
712
        // https://tools.ietf.org/html/rfc1060
713
        // https://en.wikipedia.org/wiki/Multicast_address#cite_note-15
714
        // http://www.cavebear.com/archive/cavebear/Ethernet/Ethernet.txt
715
        if (mac_equals($mac, '01:00:0C:00:00:00')) $app = 'Inter Switch Link (ISL)';
716
        if (mac_equals($mac, '01:00:0C:CC:CC:CC')) $app = 'CDP (Cisco Discovery Protocol), VTP (VLAN Trunking Protocol), EtherType is 0x0802';
717
        if (mac_equals($mac, '01:00:0C:CC:CC:CC')) $app = 'Port Aggregation Protocol (PAgP), SNAP HDLC Protocol Type is 0x0104';
718
        if (mac_equals($mac, '01:00:0C:CC:CC:CC')) $app = 'Unidirectional Link Detection (UDLD), SNAP HDLC Protocol Type is 0x0111';
719
        if (mac_equals($mac, '01:00:0C:CC:CC:CC')) $app = 'Dynamic Trunking (DTP), SNAP HDLC Protocol Type is 0x2004';
720
        if (mac_equals($mac, '01:00:0C:CC:CC:CC')) $app = 'VLAN Trunking (VTP), SNAP HDLC Protocol Type is 0x2003';
721
        if (mac_equals($mac, '01:00:0C:CC:CC:CD')) $app = 'Cisco Shared Spanning Tree Protocol address, EtherType is 0x0802';
722
        if (mac_equals($mac, '01:00:0C:CC:CC:CD')) $app = 'Spanning Tree PVSTP+, SNAP HDLC Protocol Type is 0x010B';
723
        if (mac_equals($mac, '01:00:0C:CD:CD:CD')) $app = 'STP Uplink Fast, SNAP HDLC Protocol Type is 0x200A';
724
        if (mac_equals($mac, '01:00:0C:CD:CD:CE')) $app = 'VLAN Bridge, SNAP HDLC Protocol Type is 0x010C';
725
        if (mac_equals($mac, '01:00:0C:DD:DD:DD')) $app = 'CGMP (Cisco Group Management Protocol)';
726
 
727
        // === FAQ "How to recognise an ITU-T's MAC address application?" ===
728
        // https://www.itu.int/en/ITU-T/studygroups/2017-2020/15/Documents/IEEE-assigned_OUIs-30-06-2017.docx
729
        if (mac_between($mac, '01:19:A7:00:00:00', '01:19:A7:00:00:FF')) $app = 'R-APS per G.8032';
730
        if (mac_between($mac, '01:19:A7:52:76:90', '01:19:A7:52:76:9F')) $app = 'Multicast per G.9961';
731
 
732
        // === FAQ "How to recognise Digital Equipment Corporation's MAC address application?" ===
733
        if (mac_equals($mac, '09:00:2B:00:00:00')) $app = 'DEC MUMPS, EtherType is 0x6009';
734
        if (mac_equals($mac, '09:00:2B:00:00:0F')) $app = 'DEC Local Area Transport (LAT), EtherType is 0x6004';
735
        if (mac_equals($mac, '09:00:2B:00:00:01')) $app = 'DEC DSM/DDP, EtherType is 0x8039';
736
        if (mac_between($mac, '09:00:2B:00:00:10', '09:00:2B:00:00:1F')) $app = 'DEC Experimental';
737
        if (mac_equals($mac, '09:00:2B:00:00:02')) $app = 'DEC VAXELN, EtherType is 0x803B';
738
        if (mac_equals($mac, '09:00:2B:00:00:03')) $app = 'DEC Lanbridge Traffic Monitor (LTM), EtherType is 0x8038';
739
        if (mac_equals($mac, '09:00:2B:00:00:04')) $app = 'DEC MAP End System';
740
        if (mac_equals($mac, '09:00:2B:00:00:05')) $app = 'DEC MAP Intermediate System';
741
        if (mac_equals($mac, '09:00:2B:00:00:06')) $app = 'DEC CSMA/CD Encryption, EtherType is 0x803D';
742
        if (mac_equals($mac, '09:00:2B:00:00:07')) $app = 'DEC NetBios Emulator, EtherType is 0x8040';
743
        if (mac_equals($mac, '09:00:2B:01:00:00')) $app = 'DEC LanBridge, EtherType is 0x8038';
744
        if (mac_equals($mac, '09:00:2B:01:00:01')) $app = 'DEC LanBridge, EtherType is 0x8038';
745
        if (mac_equals($mac, '09:00:2B:02:00:00')) $app = 'DEC DNA Level 2 Routing';
746
        if (mac_equals($mac, '09:00:2B:02:01:00')) $app = 'DEC DNA Naming Service Advertisement, EtherType is 0x803C';
747
        if (mac_equals($mac, '09:00:2B:02:01:01')) $app = 'DEC DNA Naming Service Solicitation, EtherType is 0x803C';
748
        if (mac_equals($mac, '09:00:2B:02:01:02')) $app = 'DEC Distributed Time Service, EtherType is 0x803E';
749
        if (mac_equals($mac, '09:00:2B:02:01:09')) $app = 'DEC Availability Manager for Distributed Systems DECamds, EtherType is 0x8048';
750
        if (mac_between($mac, '09:00:2B:03:00:00', '09:00:2B:03:FF:FF')) $app = 'DEC default filtering by bridges';
751
        if (mac_equals($mac, '09:00:2B:04:00:00')) $app = 'DEC Local Area System Transport (LAST), EtherType is 0x8041';
752
        if (mac_equals($mac, '09:00:2B:23:00:00')) $app = 'DEC Argonaut Console, EtherType is 0x803A';
753
        if (mac_equals($mac, 'AB:00:00:01:00:00')) $app = 'DEC Maintenance Operation Protocol (MOP) Dump/Load Assistance, EtherType is 0x6001';
754
        if (mac_equals($mac, 'AB:00:00:02:00:00')) $app = 'DEC Maintenance Operation Protocol (MOP), EtherType is 0x6002';
755
        if (mac_equals($mac, 'AB:00:00:03:00:00')) $app = 'DECNET Phase IV end node, EtherType is 0x6003';
756
        if (mac_equals($mac, 'AB:00:00:04:00:00')) $app = 'DECNET Phase IV Router, EtherType is 0x6003';
757
        if (mac_between($mac, 'AB:00:00:05:00:00', 'AB:00:03:FF:FF:FF')) $app = 'Reserved DEC';
758
        if (mac_equals($mac, 'AB:00:03:00:00:00')) $app = 'DEC Local Area Transport (LAT) - old, EtherType is 0x6004';
759
        if (mac_between($mac, 'AB:00:04:00:00:00', 'AB:00:04:00:FF:FF')) $app = 'Reserved DEC customer private use';
16 daniel-mar 760
        if (mac_between($mac, 'AB:00:04:01:00:00', 'AB:00:04:01:FF:FF')) $app = 'DEC Local Area VAX Cluster groups System Communication Architecture (SCA), EtherType is 0x6007';
15 daniel-mar 761
 
762
        if ($app) {
763
                echo sprintf("%-32s %s\n", "Special use:", $app);
764
        }
765
 
2 daniel-mar 766
}
15 daniel-mar 767
 
768
/**
769
 * @param string $mac1
770
 * @param string $mac2
771
 * @return bool
772
 */
773
function mac_equals(string $mac1, string $mac2): bool {
16 daniel-mar 774
        $mac1test = eui64_to_eui48($mac1);
775
        if ($mac1test === false) return false;
776
        $mac2test = eui64_to_eui48($mac2);
777
        if ($mac2test === false) return false;
778
 
779
        if (eui_bits($mac1test) != eui_bits($mac2test)) {
780
                $mac1test = eui48_to_eui64($mac1);
781
                $mac2test = eui48_to_eui64($mac2);
782
        }
783
 
784
        return mac_canonize($mac1test) == mac_canonize($mac2test);
15 daniel-mar 785
}
786
 
787
/**
788
 * @param string $mac
789
 * @param string $low
790
 * @param string $high
791
 * @return bool
792
 */
793
function mac_between(string $mac, string $low, string $high): bool {
16 daniel-mar 794
        $mactest = eui64_to_eui48($mac);
795
        if ($mactest === false) return false;
796
        $lowtest = eui64_to_eui48($low);
797
        if ($lowtest === false) return false;
798
        $hightest = eui64_to_eui48($high);
799
        if ($hightest === false) return false;
15 daniel-mar 800
 
16 daniel-mar 801
        if ((eui_bits($mactest) != eui_bits($lowtest)) || (eui_bits($lowtest) != eui_bits($hightest))) {
802
                $mactest = eui48_to_eui64($mac);
18 daniel-mar 803
                if ($mactest === false) return false; // e.g. trying ELI-48 to ELI-64
16 daniel-mar 804
                $lowtest = eui48_to_eui64($low);
18 daniel-mar 805
                if ($lowtest === false) return false; // e.g. trying ELI-48 to ELI-64
16 daniel-mar 806
                $hightest = eui48_to_eui64($high);
18 daniel-mar 807
                if ($hightest === false) return false; // e.g. trying ELI-48 to ELI-64
16 daniel-mar 808
        }
15 daniel-mar 809
 
16 daniel-mar 810
        $mactest = strtoupper(preg_replace('@[^0-9A-F]@', '', $mactest));
811
        $lowtest = strtoupper(preg_replace('@[^0-9A-F]@', '', $lowtest));
812
        $hightest = strtoupper(preg_replace('@[^0-9A-F]@', '', $hightest));
15 daniel-mar 813
 
16 daniel-mar 814
        $mactest = gmp_init($mactest, 16);
815
        $lowtest = gmp_init($lowtest, 16);
816
        $hightest = gmp_init($hightest, 16);
15 daniel-mar 817
 
16 daniel-mar 818
        return (gmp_cmp($mactest, $lowtest) >= 0) && (gmp_cmp($mactest, $hightest) <= 0);
17 daniel-mar 819
}