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  1. Host link IP: fe80::9eec:b32d:855c:5589
  2. Server link IP: fe80::f03c:91ff:fe11:96c4
  3.  
  4. Host global IP: 2601:aaaa:bbbb:cccc:1854:46d6:c2f9:e727 (Ugh!)
  5. Server global IP: 2601:aaaa:bbbb:cccc::1
  6.  
  7. 2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
  8. link/ether 28:d2:44:6b:bf:9f brd ff:ff:ff:ff:ff:ff
  9. inet 172.21.0.102/24 brd 172.21.0.255 scope global dynamic noprefixroute enp0s25
  10. valid_lft 39535sec preferred_lft 39535sec
  11. inet6 2601:aaaa:bbbb:cccc:ec25:e54d:4255:6c76/64 scope global temporary dynamic
  12. valid_lft 86199sec preferred_lft 14199sec
  13. inet6 2601:aaaa:bbbb:cccc:1854:46d6:c2f9:e727/64 scope global dynamic mngtmpaddr noprefixroute
  14. valid_lft 86199sec preferred_lft 14199sec
  15. inet6 fe80::9eec:b32d:855c:5589/64 scope link noprefixroute
  16. valid_lft forever preferred_lft forever
  17.  
  18. root@li336-239:/var# cat /etc/radvd.conf
  19. interface tap0
  20. {
  21. AdvSendAdvert on;
  22. AdvManagedFlag on;
  23. AdvOtherConfigFlag on;
  24. prefix 2601:aaaa:bbbb:cccc::/64
  25. {
  26. AdvOnLink on;
  27. AdvAutonomous on;
  28. };
  29. };
  30.  
  31. Server: ping6 -c2 fe80::9eec:b32d:855c:5589%tap0 --> Success
  32. Host: ping6 -c2 fe80::f03c:91ff:fe11:96c4%enp0s25 --> Success
  33.  
  34. 10:16:39 li336-239 dhcpd[5067]: Solicit message from fe80::9eec:b32d:855c:5589 port 546, transaction ID 0x83D90700
  35. 10:16:39 li336-239 dhcpd[5067]: Advertise NA: address 2601:aaaa:bbbb:cccc:1000::fa8d to client with duid 00:01:00:01:22:b0:4f:4a:28:d2:44:6b:bf:9f iaid = 1147912095 valid for 600 seconds
  36. 10:16:39 li336-239 dhcpd[5067]: Sending Advertise to fe80::9eec:b32d:855c:5589 port 546
  37. 10:16:40 li336-239 dhcpd[5067]: Solicit message from fe80::9eec:b32d:855c:5589 port 546, transaction ID 0x83D90700
  38. 10:16:40 li336-239 dhcpd[5067]: Advertise NA: address 2601:aaaa:bbbb:cccc:1000::fa8d to client with duid 00:01:00:01:22:b0:4f:4a:28:d2:44:6b:bf:9f iaid = 1147912095 valid for 600 seconds
  39. 10:16:40 li336-239 dhcpd[5067]: Sending Advertise to fe80::9eec:b32d:855c:5589 port 546
  40. 10:16:42 li336-239 dhcpd[5067]: Solicit message from fe80::9eec:b32d:855c:5589 port 546, transaction ID 0x83D90700
  41. 10:16:42 li336-239 dhcpd[5067]: Advertise NA: address 2601:aaaa:bbbb:cccc:1000::fa8d to client with duid 00:01:00:01:22:b0:4f:4a:28:d2:44:6b:bf:9f iaid = 1147912095 valid for 600 seconds
  42. 10:16:42 li336-239 dhcpd[5067]: Sending Advertise to fe80::9eec:b32d:855c:5589 port 546
  43. 10:16:46 li336-239 dhcpd[5067]: Solicit message from fe80::9eec:b32d:855c:5589 port 546, transaction ID 0x83D90700
  44. 10:16:46 li336-239 dhcpd[5067]: Advertise NA: address 2601:aaaa:bbbb:cccc:1000::fa8d to client with duid 00:01:00:01:22:b0:4f:4a:28:d2:44:6b:bf:9f iaid = 1147912095 valid for 600 seconds
  45. 10:16:46 li336-239 dhcpd[5067]: Sending Advertise to fe80::9eec:b32d:855c:5589 port 546
  46. 10:16:55 li336-239 dhcpd[5067]: Solicit message from fe80::9eec:b32d:855c:5589 port 546, transaction ID 0x83D90700
  47. 10:16:55 li336-239 dhcpd[5067]: Advertise NA: address 2601:aaaa:bbbb:cccc:1000::fa8d to client with duid 00:01:00:01:22:b0:4f:4a:28:d2:44:6b:bf:9f iaid = 1147912095 valid for 600 seconds
  48. 10:16:55 li336-239 dhcpd[5067]: Sending Advertise to fe80::9eec:b32d:855c:5589 port 546
  49. 10:17:13 li336-239 dhcpd[5067]: Solicit message from fe80::9eec:b32d:855c:5589 port 546, transaction ID 0x83D90700
  50. 10:17:13 li336-239 dhcpd[5067]: Advertise NA: address 2601:aaaa:bbbb:cccc:1000::fa8d to client with duid 00:01:00:01:22:b0:4f:4a:28:d2:44:6b:bf:9f iaid = 1147912095 valid for 600 seconds
  51. 10:17:13 li336-239 dhcpd[5067]: Sending Advertise to fe80::9eec:b32d:855c:5589 port 546
  52.  
  53. root@some-computer:~# ip monitor
  54. 2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default
  55. link/ether 28:d2:44:6b:bf:9f brd ff:ff:ff:ff:ff:ff
  56. 2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default
  57. link/ether 28:d2:44:6b:bf:9f brd ff:ff:ff:ff:ff:ff
  58. Deleted ff02::1:ff5c:5589 dev enp0s25 lladdr 33:33:ff:5c:55:89 NOARP
  59. Deleted ff02::2 dev enp0s25 lladdr 33:33:00:00:00:02 NOARP
  60. Deleted fe80::f03c:91ff:fe11:96c4 dev enp0s25 lladdr f2:3c:91:11:96:c4 router STALE
  61. Deleted ff02::fb dev enp0s25 lladdr 33:33:00:00:00:fb NOARP
  62. Deleted ff02::1:2 dev enp0s25 lladdr 33:33:00:01:00:02 NOARP
  63. Deleted ff02::16 dev enp0s25 lladdr 33:33:00:00:00:16 NOARP
  64. Deleted ff02::1:ff55:6c76 dev enp0s25 lladdr 33:33:ff:55:6c:76 NOARP
  65. Deleted ff02::1:fff9:e727 dev enp0s25 lladdr 33:33:ff:f9:e7:27 NOARP
  66. ff00::/8 dev enp0s25 table local metric 256 pref medium
  67. 2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default
  68. link/ether 28:d2:44:6b:bf:9f brd ff:ff:ff:ff:ff:ff
  69. Deleted ff00::/8 dev enp0s25 table local metric 256 pref medium
  70. ff00::/8 dev enp0s25 table local metric 256 pref medium
  71. fe80::/64 dev enp0s25 proto kernel metric 256 pref medium
  72. 2: enp0s25 inet 172.21.0.102/24 brd 172.21.0.255 scope global dynamic noprefixroute enp0s25
  73. valid_lft 39738sec preferred_lft 39738sec
  74. local 172.21.0.102 dev enp0s25 table local proto kernel scope host src 172.21.0.102
  75. broadcast 172.21.0.255 dev enp0s25 table local proto kernel scope link src 172.21.0.102
  76. broadcast 172.21.0.0 dev enp0s25 table local proto kernel scope link src 172.21.0.102
  77. 172.21.0.0/24 dev enp0s25 proto kernel scope link src 172.21.0.102 metric 100
  78. default via 172.21.0.1 dev enp0s25 proto dhcp metric 20100
  79. ipv4 dev enp0s25 rp_filter loose
  80. 172.21.0.1 dev enp0s25 lladdr 00:e0:4c:68:3b:72 REACHABLE
  81. 169.254.0.0/16 dev enp0s25 scope link metric 1000
  82. 10.16.0.1 dev enp0s25 lladdr f2:3c:91:11:96:c4 REACHABLE
  83. 2: enp0s25 inet6 fe80::9eec:b32d:855c:5589/64 scope link
  84. valid_lft forever preferred_lft forever
  85. local fe80::9eec:b32d:855c:5589 dev enp0s25 table local proto kernel metric 0 pref medium
  86. 2: enp0s25 inet6 fe80::9eec:b32d:855c:5589/64 scope link noprefixroute
  87. valid_lft forever preferred_lft forever
  88. Deleted fe80::/64 dev enp0s25 proto kernel metric 256 pref medium
  89. fe80::/64 dev enp0s25 proto kernel metric 256 pref medium
  90. fe80::/64 dev enp0s25 proto kernel metric 100 pref medium
  91. 2: enp0s25 inet 172.21.0.102/24 brd 172.21.0.255 scope global dynamic noprefixroute enp0s25
  92. valid_lft 39736sec preferred_lft 39736sec
  93. default via 172.21.0.1 dev enp0s25 proto dhcp metric 100
  94. Deleted default via 172.21.0.1 dev enp0s25 proto dhcp metric 20100
  95. fe80::f03c:91ff:fe11:96c4 dev enp0s25 lladdr f2:3c:91:11:96:c4 router STALE
  96. 2: enp0s25 inet6 fe80::9eec:b32d:855c:5589/64 scope link noprefixroute
  97. valid_lft forever preferred_lft forever
  98. 2601:aaaa:bbbb:cccc::/64 dev enp0s25 proto ra metric 100 pref medium
  99. default via fe80::f03c:91ff:fe11:96c4 dev enp0s25 proto ra metric 100 pref medium
  100. [!!HERE--->] 2: enp0s25 inet6 2601:aaaa:bbbb:cccc:ec25:e54d:4255:6c76/64 scope global temporary dynamic
  101. valid_lft 86399sec preferred_lft 14399sec
  102. local 2601:aaaa:bbbb:cccc:ec25:e54d:4255:6c76 dev enp0s25 table local proto kernel metric 0 pref medium
  103. [!!HERE--->] 2: enp0s25 inet6 2601:aaaa:bbbb:cccc:1854:46d6:c2f9:e727/64 scope global dynamic mngtmpaddr noprefixroute
  104. valid_lft 86399sec preferred_lft 14399sec
  105. [!!HERE--->] local 2601:aaaa:bbbb:cccc:1854:46d6:c2f9:e727 dev enp0s25 table local proto kernel metric 0 pref medium
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