{"id":128,"date":"2020-09-26T17:45:15","date_gmt":"2020-09-26T08:45:15","guid":{"rendered":"http:\/\/192.168.20.1\/?p=128"},"modified":"2021-04-30T18:21:05","modified_gmt":"2021-04-30T09:21:05","slug":"ipv6-neighbor-discovery","status":"publish","type":"post","link":"https:\/\/rlab.cavtime.net\/?p=128","title":{"rendered":"IPv6 Neighbor Discovery"},"content":{"rendered":"<h2>Overview<\/h2>\n<p>Cisco IOS \u306e IPv6 Neighbor Discovery \u306e\u52d5\u4f5c\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/p>\n<h2>Reference<\/h2>\n<ul>\n<li><a href=\"https:\/\/ja.wikipedia.org\/wiki\/IPv6\" target=\"_blank\" rel=\"noopener noreferrer\">IPv6<\/a> ( wikipedia )<\/li>\n<li><a href=\"https:\/\/ja.wikipedia.org\/wiki\/Internet_Control_Message_Protocol_for_IPv6\" target=\"_blank\" rel=\"noopener noreferrer\">Internet Control Message Protocol for IPv6<\/a> ( wikipedia )<\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/ja_jp\/td\/docs\/cian\/iosxe\/iosxe3s\/cg\/012\/ip6b-xe-3s-book\/ip6b-xe-3s-book_chapter_01001.html\" target=\"_blank\" rel=\"noopener noreferrer\">IPv6 \u30a2\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\u304a\u3088\u3073\u57fa\u672c\u7684\u306a\u63a5\u7d9a\u306e\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3 \u30ac\u30a4\u30c9\u3001Cisco IOS XE Release 3S<\/a> ( Cisco )<\/li>\n<li><a href=\"https:\/\/www.remlab.net\/ndisc6\/\" target=\"_blank\" rel=\"noopener noreferrer\">NDisc6 : IPv6 diagnostic tools for Linux and BSD<\/a><\/li>\n<\/ul>\n<h2>RFC&#8217;s<\/h2>\n<ul>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1970\" target=\"_blank\" rel=\"noopener noreferrer\">RFC 1970<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc2461\" target=\"_blank\" rel=\"noopener noreferrer\">RFC 2461<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc4861\" target=\"_blank\" rel=\"noopener noreferrer\">RFC 4861<\/a><\/li>\n<\/ul>\n<h2>Environment<\/h2>\n<h3>Router01<\/h3>\n<pre>RT01#show ver\r\nCisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 15.1(4)M12a, RELEASE SOFTWARE (fc1)\r\nTechnical Support: http:\/\/www.cisco.com\/techsupport\r\nCopyright (c) 1986-2016 by Cisco Systems, Inc.\r\nCompiled Tue 04-Oct-16 02:58 by prod_rel_team\r\n\r\nROM: System Bootstrap, Version 12.3(8r)YH13, RELEASE SOFTWARE (fc1)\r\n\r\nRT01 uptime is 2 hours, 51 minutes\r\nSystem returned to ROM by power-on\r\nSystem image file is \"flash:c181x-advipservicesk9-mz.151-4.M12a.bin\"\r\nLast reload type: Normal Reload\r\n\r\n\r\nThis product contains cryptographic features and is subject to United\r\nStates and local country laws governing import, export, transfer and\r\nuse. Delivery of Cisco cryptographic products does not imply\r\nthird-party authority to import, export, distribute or use encryption.\r\nImporters, exporters, distributors and users are responsible for\r\ncompliance with U.S. and local country laws. By using this product you\r\nagree to comply with applicable laws and regulations. If you are unable\r\nto comply with U.S. and local laws, return this product immediately.\r\n\r\nA summary of U.S. laws governing Cisco cryptographic products may be found at:\r\nhttp:\/\/www.cisco.com\/wwl\/export\/crypto\/tool\/stqrg.html\r\n\r\nIf you require further assistance please contact us by sending email to\r\nexport@cisco.com.\r\n\r\nCisco 1812-J (MPC8500) processor (revision 0x400) with 236544K\/25600K bytes of memory.\r\nProcessor board ID FGL1520247S, with hardware revision 0000\r\n\r\n10 FastEthernet interfaces\r\n1 ISDN Basic Rate interface\r\n1 Virtual Private Network (VPN) Module\r\n62720K bytes of ATA CompactFlash (Read\/Write)\r\n\r\n\r\nLicense Info:\r\n\r\nLicense UDI:\r\n\r\n-------------------------------------------------\r\nDevice#\t  PID\t\t\tSN\r\n-------------------------------------------------\r\n*0  \t  CISCO1812-J\/K9        FGL1520247S     \r\n\r\n\r\n\r\nConfiguration register is 0x2102\r\n\r\nRT01#\r\n<\/pre>\n<h3>Router02<\/h3>\n<pre>RT02#show version \r\nCisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 15.1(4)M12a, RELEASE SOFTWARE (fc1)\r\nTechnical Support: http:\/\/www.cisco.com\/techsupport\r\nCopyright (c) 1986-2016 by Cisco Systems, Inc.\r\nCompiled Tue 04-Oct-16 02:58 by prod_rel_team\r\n\r\nROM: System Bootstrap, Version 12.3(8r)YH13, RELEASE SOFTWARE (fc1)\r\n\r\nRT02 uptime is 2 hours, 41 minutes\r\nSystem returned to ROM by reload at 03:34:56 UTC Sat Sep 26 2020\r\nSystem image file is \"flash:c181x-advipservicesk9-mz.151-4.M12a.bin\"\r\nLast reload type: Normal Reload\r\n\r\n\r\nThis product contains cryptographic features and is subject to United\r\nStates and local country laws governing import, export, transfer and\r\nuse. Delivery of Cisco cryptographic products does not imply\r\nthird-party authority to import, export, distribute or use encryption.\r\nImporters, exporters, distributors and users are responsible for\r\ncompliance with U.S. and local country laws. By using this product you\r\nagree to comply with applicable laws and regulations. If you are unable\r\nto comply with U.S. and local laws, return this product immediately.\r\n\r\nA summary of U.S. laws governing Cisco cryptographic products may be found at:\r\nhttp:\/\/www.cisco.com\/wwl\/export\/crypto\/tool\/stqrg.html\r\n\r\nIf you require further assistance please contact us by sending email to\r\nexport@cisco.com.\r\n\r\nCisco 1812-J (MPC8500) processor (revision 0x400) with 236544K\/25600K bytes of memory.\r\nProcessor board ID FGL151020VL, with hardware revision 0000\r\n\r\n10 FastEthernet interfaces\r\n1 ISDN Basic Rate interface\r\n1 Virtual Private Network (VPN) Module\r\n62720K bytes of ATA CompactFlash (Read\/Write)\r\n\r\n\r\nLicense Info:\r\n\r\nLicense UDI:\r\n\r\n-------------------------------------------------\r\nDevice#\t  PID\t\t\tSN\r\n-------------------------------------------------\r\n*0  \t  CISCO1812-J\/K9        FGL151020VL     \r\n\r\n\r\n\r\nConfiguration register is 0x2102\r\n\r\nRT02#\r\n<\/pre>\n<h2>Configuration<\/h2>\n<h3>Router01<\/h3>\n<pre>RT01#show running-config interface FastEthernet 0\r\nBuilding configuration...\r\n\r\nCurrent configuration : 156 bytes\r\n!\r\ninterface FastEthernet0\r\n ip address 172.16.31.1 255.255.255.0\r\n duplex auto\r\n speed auto\r\n ipv6 address FE80::1 link-local\r\n ipv6 address 2001:DB8::1\/64\r\nend\r\n\r\nRT01#\r\n<\/pre>\n<h3>Router02<\/h3>\n<pre>RT02#sh running-config interface FastEthernet 0\r\nBuilding configuration...\r\n\r\nCurrent configuration : 156 bytes\r\n!\r\ninterface FastEthernet0\r\n ip address 172.16.31.2 255.255.255.0\r\n duplex auto\r\n speed auto\r\n ipv6 address FE80::2 link-local\r\n ipv6 address 2001:DB8::2\/64\r\nend\r\n\r\nRT02#\r\n<\/pre>\n<h2>Debug &amp; Operation<\/h2>\n<p>Debug<\/p>\n<pre>RT01#show debugging \r\n  ICMP Neighbor Discovery events debugging is on\r\nRT01#\r\n<\/pre>\n<p>Operation<\/p>\n<pre>RT01#\r\nRT01#clear ipv6 neighbors \r\nRT01#\r\n*Sep 26 05:24:34.703: ICMPv6-ND: STALE -&gt; DELETE: FE80::2\r\n*Sep 26 05:24:34.703: ICMPv6-ND: STALE -&gt; DELETE: 2001:DB8::2\r\nRT01#\r\nRT01#\r\nRT01#ping 2001:db8::2\r\nType escape sequence to abort.\r\nSending 5, 100-byte ICMP Echos to 2001:DB8::2, timeout is 2 seconds:\r\n!!!!!\r\nSuccess rate is 100 percent (5\/5), round-trip min\/avg\/max = 0\/1\/8 ms\r\nRT01#\r\n*Sep 26 05:24:55.387: ICMPv6-ND: DELETE -&gt; INCMP: 2001:DB8::2\r\n*Sep 26 05:24:55.387: ICMPv6-ND: Sending NS for 2001:DB8::2 on FastEthernet0\r\n*Sep 26 05:24:55.387: ICMPv6-ND: Resolving next hop 2001:DB8::2 on interface FastEthernet0\r\n*Sep 26 05:24:55.395: ICMPv6-ND: Received NA for 2001:DB8::2 on FastEthernet0 from 2001:DB8::2\r\n*Sep 26 05:24:55.395: ICMPv6-ND: Neighbour 2001:DB8::2 on FastEthernet0 : LLA c89c.1d24.2ae2\r\n*Sep 26 05:24:55.395: ICMPv6-ND: INCMP -&gt; REACH: 2001:DB8::2\r\n*Sep 26 05:25:00.455: ICMPv6-ND: Received NS for 2001:DB8::1 on FastEthernet0 from FE80::2\r\n*Sep 26 05:25:00.455: ICMPv6-ND: Glean FE80::2 on FastEthernet0\r\n*Sep 26 05:25:00.455: ICMPv6-ND: Neighbour FE80::2 on FastEthernet0 : LLA c89c.1d24.2ae2\r\n*Sep 26 05:25:00.455: ICMPv6-ND: INCMP -&gt; STALE: FE80::2\r\n*Sep 26 05:25:00.455: ICMPv6-ND: Sending NA for 2001:DB8::1 on FastEthernet0\r\n*Sep 26 05:25:00.459: ICMPv6-ND: STALE -&gt; DELAY: FE80::2\r\n*Sep 26 05:25:05.519: ICMPv6-ND: DELAY -&gt; PROBE: FE80::2\r\n*Sep 26 05:25:05.519: ICMPv6-ND: Sending NS for FE80::2 on FastEthernet0\r\n*Sep 26 05:25:05.527: ICMPv6-ND: Received NA for FE80::2 on FastEthernet0 from FE80::2\r\n*Sep 26 05:25:05.527: ICMPv6-ND: PROBE -&gt; REACH: FE80::2\r\n*Sep 26 05:25:10.587: ICMPv6-ND: Received NS for FE80::1 on FastEthernet0 from FE80::2\r\n*Sep 26 05:25:10.587: ICMPv6-ND: Sending NA for FE80::1 on FastEthernet0\r\n*Sep 26 05:25:25.463: ICMPv6-ND: REACH -&gt; STALE: 2001:DB8::2\r\nRT01#\r\nRT01#undeb all\r\nAll possible debugging has been turned off\r\nRT01#\r\n*Sep 26 05:25:35.603: ICMPv6-ND: REACH -&gt; STALE: FE80::2\r\nRT01#\r\n<\/pre>\n<pre>RT01#show ipv6 neighbors \r\nIPv6 Address                              Age Link-layer Addr State Interface\r\nFE80::2                                     1 c89c.1d24.2ae2  STALE Fa0\r\n2001:DB8::2                                 2 c89c.1d24.2ae2  STALE Fa0\r\n\r\nRT01#\r\n<\/pre>\n<h2>Packet<\/h2>\n<h3>Packets<\/h3>\n<pre>No.     Time           Source                Destination           Protocol Length Info\r\n     20 31.667727481   2001:db8::1           ff02::1:ff00:2        ICMPv6   86     Neighbor Solicitation for 2001:db8::2 from e8:b7:48:67:9c:4e\r\n     21 31.672033472   2001:db8::2           2001:db8::1           ICMPv6   86     Neighbor Advertisement 2001:db8::2 (sol, ovr) is at c8:9c:1d:24:2a:e2\r\n     22 31.672817567   2001:db8::1           2001:db8::2           ICMPv6   114    Echo (ping) request id=0x20b6, seq=0, hop limit=64 (reply in 23)\r\n     23 31.673176486   2001:db8::2           2001:db8::1           ICMPv6   114    Echo (ping) reply id=0x20b6, seq=0, hop limit=64 (request in 22)\r\n     24 31.673765807   2001:db8::1           2001:db8::2           ICMPv6   114    Echo (ping) request id=0x20b6, seq=1, hop limit=64 (reply in 25)\r\n     25 31.674258443   2001:db8::2           2001:db8::1           ICMPv6   114    Echo (ping) reply id=0x20b6, seq=1, hop limit=64 (request in 24)\r\n     26 31.674781148   2001:db8::1           2001:db8::2           ICMPv6   114    Echo (ping) request id=0x20b6, seq=2, hop limit=64 (reply in 27)\r\n     27 31.675136640   2001:db8::2           2001:db8::1           ICMPv6   114    Echo (ping) reply id=0x20b6, seq=2, hop limit=64 (request in 26)\r\n     28 31.675694197   2001:db8::1           2001:db8::2           ICMPv6   114    Echo (ping) request id=0x20b6, seq=3, hop limit=64 (reply in 29)\r\n     29 31.676120777   2001:db8::2           2001:db8::1           ICMPv6   114    Echo (ping) reply id=0x20b6, seq=3, hop limit=64 (request in 28)\r\n     30 31.676678836   2001:db8::1           2001:db8::2           ICMPv6   114    Echo (ping) request id=0x20b6, seq=4, hop limit=64 (reply in 31)\r\n     31 31.677033280   2001:db8::2           2001:db8::1           ICMPv6   114    Echo (ping) reply id=0x20b6, seq=4, hop limit=64 (request in 30)\r\n     36 36.732215095   fe80::2               2001:db8::1           ICMPv6   86     Neighbor Solicitation for 2001:db8::1 from c8:9c:1d:24:2a:e2\r\n     37 36.736071218   2001:db8::1           fe80::2               ICMPv6   78     Neighbor Advertisement 2001:db8::1 (rtr, sol)\r\n     41 41.799987967   fe80::1               fe80::2               ICMPv6   86     Neighbor Solicitation for fe80::2 from e8:b7:48:67:9c:4e\r\n     42 41.804294669   fe80::2               fe80::1               ICMPv6   78     Neighbor Advertisement fe80::2 (sol)\r\n     47 46.864399598   fe80::2               fe80::1               ICMPv6   86     Neighbor Solicitation for fe80::1 from c8:9c:1d:24:2a:e2\r\n     48 46.868148614   fe80::1               fe80::2               ICMPv6   78     Neighbor Advertisement fe80::1 (rtr, sol)\r\n     49 47.861879477   fe80::21f:67ff:fee1:4bc0 ff02::1               ICMPv6   90     Multicast Listener Query\r\n     54 53.632005830   fe80::2f69:5ab3:b79f:fb25 ff02::16              ICMPv6   130    Multicast Listener Report Message v2\r\n<\/pre>\n<h3>Router01<\/h3>\n<p><strong>ICMPv6 Type 135 (Neighbor Solicitation)<\/strong><\/p>\n<pre>No.     Time           Source                Destination           Protocol Length Info\r\n     20 31.667727481   2001:db8::1           ff02::1:ff00:2        ICMPv6   86     Neighbor Solicitation for 2001:db8::2 from e8:b7:48:67:9c:4e\r\n\r\nEthernet II, Src: Cisco_67:9c:4e (e8:b7:48:67:9c:4e), Dst: IPv6mcast_ff:00:00:02 (33:33:ff:00:00:02)\r\n    Destination: IPv6mcast_ff:00:00:02 (33:33:ff:00:00:02)\r\n    Source: Cisco_67:9c:4e (e8:b7:48:67:9c:4e)\r\n    Type: IPv6 (0x86dd)\r\nInternet Protocol Version 6, Src: 2001:db8::1, Dst: ff02::1:ff00:2\r\n    0110 .... = Version: 6\r\n    .... 1110 0000 .... .... .... .... .... = Traffic Class: 0xe0 (DSCP: CS7, ECN: Not-ECT)\r\n    .... .... .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000\r\n    Payload Length: 32\r\n    Next Header: ICMPv6 (58)\r\n    Hop Limit: 255\r\n    Source: 2001:db8::1\r\n    Destination: ff02::1:ff00:2\r\nInternet Control Message Protocol v6\r\n    Type: Neighbor Solicitation (135)\r\n    Code: 0\r\n    Checksum: 0x50ba [correct]\r\n    [Checksum Status: Good]\r\n    Reserved: 00000000\r\n    Target Address: 2001:db8::2\r\n    ICMPv6 Option (Source link-layer address : e8:b7:48:67:9c:4e)\r\n        Type: Source link-layer address (1)\r\n        Length: 1 (8 bytes)\r\n        Link-layer address: Cisco_67:9c:4e (e8:b7:48:67:9c:4e)\r\n\r\n0000  33 33 ff 00 00 02 e8 b7 48 67 9c 4e 86 dd 6e 00   33......Hg.N..n.\r\n0010  00 00 00 20 3a ff 20 01 0d b8 00 00 00 00 00 00   ... :. .........\r\n0020  00 00 00 00 00 01 ff 02 00 00 00 00 00 00 00 00   ................\r\n0030  00 01 ff 00 00 02 87 00 50 ba 00 00 00 00 20 01   ........P..... .\r\n0040  0d b8 00 00 00 00 00 00 00 00 00 00 00 02 01 01   ................\r\n0050  e8 b7 48 67 9c 4e                                 ..Hg.N\r\n<\/pre>\n<p><strong>ICMPv6 Type 136 (Neighbor Advertisement)<\/strong><\/p>\n<pre>No.     Time           Source                Destination           Protocol Length Info\r\n     21 31.672033472   2001:db8::2           2001:db8::1           ICMPv6   86     Neighbor Advertisement 2001:db8::2 (sol, ovr) is at c8:9c:1d:24:2a:e2\r\n\r\nEthernet II, Src: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2), Dst: Cisco_67:9c:4e (e8:b7:48:67:9c:4e)\r\n    Destination: Cisco_67:9c:4e (e8:b7:48:67:9c:4e)\r\n    Source: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2)\r\n    Type: IPv6 (0x86dd)\r\nInternet Protocol Version 6, Src: 2001:db8::2, Dst: 2001:db8::1\r\n    0110 .... = Version: 6\r\n    .... 1110 0000 .... .... .... .... .... = Traffic Class: 0xe0 (DSCP: CS7, ECN: Not-ECT)\r\n    .... .... .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000\r\n    Payload Length: 32\r\n    Next Header: ICMPv6 (58)\r\n    Hop Limit: 255\r\n    Source: 2001:db8::2\r\n    Destination: 2001:db8::1\r\nInternet Control Message Protocol v6\r\n    Type: Neighbor Advertisement (136)\r\n    Code: 0\r\n    Checksum: 0x7bd0 [correct]\r\n    [Checksum Status: Good]\r\n    Flags: 0x60000000, Solicited, Override\r\n    Target Address: 2001:db8::2\r\n    ICMPv6 Option (Target link-layer address : c8:9c:1d:24:2a:e2)\r\n        Type: Target link-layer address (2)\r\n        Length: 1 (8 bytes)\r\n        Link-layer address: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2)\r\n\r\n0000  e8 b7 48 67 9c 4e c8 9c 1d 24 2a e2 86 dd 6e 00   ..Hg.N...$*...n.\r\n0010  00 00 00 20 3a ff 20 01 0d b8 00 00 00 00 00 00   ... :. .........\r\n0020  00 00 00 00 00 02 20 01 0d b8 00 00 00 00 00 00   ...... .........\r\n0030  00 00 00 00 00 01 88 00 7b d0 60 00 00 00 20 01   ........{.`... .\r\n0040  0d b8 00 00 00 00 00 00 00 00 00 00 00 02 02 01   ................\r\n0050  c8 9c 1d 24 2a e2                                 ...$*.\r\n<\/pre>\n<h3>Router02<\/h3>\n<p><strong>ICMPv6 Type 135 (Neighbor Solicitation)<\/strong><\/p>\n<pre>No.     Time           Source                Destination           Protocol Length Info\r\n     36 36.732215095   fe80::2               2001:db8::1           ICMPv6   86     Neighbor Solicitation for 2001:db8::1 from c8:9c:1d:24:2a:e2\r\n\r\nEthernet II, Src: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2), Dst: Cisco_67:9c:4e (e8:b7:48:67:9c:4e)\r\n    Destination: Cisco_67:9c:4e (e8:b7:48:67:9c:4e)\r\n    Source: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2)\r\n    Type: IPv6 (0x86dd)\r\nInternet Protocol Version 6, Src: fe80::2, Dst: 2001:db8::1\r\n    0110 .... = Version: 6\r\n    .... 1110 0000 .... .... .... .... .... = Traffic Class: 0xe0 (DSCP: CS7, ECN: Not-ECT)\r\n    .... .... .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000\r\n    Payload Length: 32\r\n    Next Header: ICMPv6 (58)\r\n    Hop Limit: 255\r\n    Source: fe80::2\r\n    Destination: 2001:db8::1\r\nInternet Control Message Protocol v6\r\n    Type: Neighbor Solicitation (135)\r\n    Code: 0\r\n    Checksum: 0x0d0a [correct]\r\n    [Checksum Status: Good]\r\n    Reserved: 00000000\r\n    Target Address: 2001:db8::1\r\n    ICMPv6 Option (Source link-layer address : c8:9c:1d:24:2a:e2)\r\n        Type: Source link-layer address (1)\r\n        Length: 1 (8 bytes)\r\n        Link-layer address: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2)\r\n\r\n0000  e8 b7 48 67 9c 4e c8 9c 1d 24 2a e2 86 dd 6e 00   ..Hg.N...$*...n.\r\n0010  00 00 00 20 3a ff fe 80 00 00 00 00 00 00 00 00   ... :...........\r\n0020  00 00 00 00 00 02 20 01 0d b8 00 00 00 00 00 00   ...... .........\r\n0030  00 00 00 00 00 01 87 00 0d 0a 00 00 00 00 20 01   .............. .\r\n0040  0d b8 00 00 00 00 00 00 00 00 00 00 00 01 01 01   ................\r\n0050  c8 9c 1d 24 2a e2                                 ...$*.\r\n<\/pre>\n<p><strong>ICMPv6 Type 136 (Neighbor Advertisement)<\/strong><\/p>\n<pre>No.     Time           Source                Destination           Protocol Length Info\r\n     37 36.736071218   2001:db8::1           fe80::2               ICMPv6   78     Neighbor Advertisement 2001:db8::1 (rtr, sol)\r\n\r\nEthernet II, Src: Cisco_67:9c:4e (e8:b7:48:67:9c:4e), Dst: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2)\r\n    Destination: Cisco_24:2a:e2 (c8:9c:1d:24:2a:e2)\r\n    Source: Cisco_67:9c:4e (e8:b7:48:67:9c:4e)\r\n    Type: IPv6 (0x86dd)\r\nInternet Protocol Version 6, Src: 2001:db8::1, Dst: fe80::2\r\n    0110 .... = Version: 6\r\n    .... 1110 0000 .... .... .... .... .... = Traffic Class: 0xe0 (DSCP: CS7, ECN: Not-ECT)\r\n    .... .... .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000\r\n    Payload Length: 24\r\n    Next Header: ICMPv6 (58)\r\n    Hop Limit: 255\r\n    Source: 2001:db8::1\r\n    Destination: fe80::2\r\nInternet Control Message Protocol v6\r\n    Type: Neighbor Advertisement (136)\r\n    Code: 0\r\n    Checksum: 0x5db5 [correct]\r\n    [Checksum Status: Good]\r\n    Flags: 0xc0000000, Router, Solicited\r\n    Target Address: 2001:db8::1\r\n\r\n0000  c8 9c 1d 24 2a e2 e8 b7 48 67 9c 4e 86 dd 6e 00   ...$*...Hg.N..n.\r\n0010  00 00 00 18 3a ff 20 01 0d b8 00 00 00 00 00 00   ....:. .........\r\n0020  00 00 00 00 00 01 fe 80 00 00 00 00 00 00 00 00   ................\r\n0030  00 00 00 00 00 02 88 00 5d b5 c0 00 00 00 20 01   ........]..... .\r\n0040  0d b8 00 00 00 00 00 00 00 00 00 00 00 01         ..............\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Overview Cisco IOS \u306e IPv6 Neighbor Discovery \u306e\u52d5\u4f5c\u3092\u78ba\u8a8d\u3059\u308b\u3002 Reference IPv6 ( wikipedia ) Internet Control Message P [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58,89],"tags":[],"class_list":["post-128","post","type-post","status-publish","format-standard","hentry","category-ip-protocol","category-router"],"_links":{"self":[{"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=\/wp\/v2\/posts\/128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=128"}],"version-history":[{"count":4,"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=\/wp\/v2\/posts\/128\/revisions"}],"predecessor-version":[{"id":140,"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=\/wp\/v2\/posts\/128\/revisions\/140"}],"wp:attachment":[{"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rlab.cavtime.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}