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ptkrisada

tcpdump during ping6 success & failure at the same time in the other window

ptkrisada
Jun 11th, 2023 (edited)
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  1. % ping6 -c 3 www.freebsd.org
  2. PING6(56=40+8+8 bytes) fd17:625c:f037:2:6b39:c50d:203:a7b --> 2404:a8:3ff::50:3
  3.  
  4. --- web.geo.freebsd.org ping6 statistics ---
  5. 3 packets transmitted, 0 packets received, 100.0% packet loss
  6. %
  7. %
  8. % ping6 -c 3 www.freebsd.org
  9. PING6(56=40+8+8 bytes) fd17:625c:f037:2:6b39:c50d:203:a7b --> 2404:a8:3ff::50:3
  10.  
  11. --- web.geo.freebsd.org ping6 statistics ---
  12. 3 packets transmitted, 0 packets received, 100.0% packet loss
  13. %
  14. %
  15. % ping6 -c 3 www.freebsd.org
  16. PING6(56=40+8+8 bytes) fd17:625c:f037:2:6b39:c50d:203:a7b --> 2404:a8:3ff::50:3
  17.  
  18. --- web.geo.freebsd.org ping6 statistics ---
  19. 3 packets transmitted, 0 packets received, 100.0% packet loss
  20. %
  21. %
  22. %
  23. %
  24. /* On the other window running tcpdump at the same time of failure. */
  25. % sudo tcpdump -i wm0 -s 0 -vvv -n icmp6
  26. Password:
  27. tcpdump: listening on wm0, link-type EN10MB (Ethernet), capture size 262144 bytes
  28. 01:30:47.811642 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) fd17:625c:f037:2:6b39:c50d:203:a7b > 2404:a8:3ff::50:3: [icmp6 sum ok] ICMP6, echo request, seq 0
  29. 01:30:47.812797 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 56) fd17:625c:f037:2::1 > fd17:625c:f037:2:6b39:c50d:203:a7b: [icmp6 sum ok] ICMP6, destination unreachable, unreachable route 2404:a8:3ff::50:3
  30. 01:30:48.826398 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) fd17:625c:f037:2:6b39:c50d:203:a7b > 2404:a8:3ff::50:3: [icmp6 sum ok] ICMP6, echo request, seq 1
  31. 01:30:48.827084 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 56) fd17:625c:f037:2::1 > fd17:625c:f037:2:6b39:c50d:203:a7b: [icmp6 sum ok] ICMP6, destination unreachable, unreachable route 2404:a8:3ff::50:3
  32. 01:30:49.829273 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) fd17:625c:f037:2:6b39:c50d:203:a7b > 2404:a8:3ff::50:3: [icmp6 sum ok] ICMP6, echo request, seq 2
  33. 01:30:49.830102 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 56) fd17:625c:f037:2::1 > fd17:625c:f037:2:6b39:c50d:203:a7b: [icmp6 sum ok] ICMP6, destination unreachable, unreachable route 2404:a8:3ff::50:3
  34. ^C
  35. 6 packets captured
  36. 8 packets received by filter
  37. 0 packets dropped by kernel
  38. %
  39. %
  40. % ping6 -c 3 www.netbsd.org
  41. PING6(56=40+8+8 bytes) fd17:625c:f037:2:6b39:c50d:203:a7b --> 2a04:4e42:69::262
  42. 16 bytes from 2a04:4e42:69::262, icmp_seq=0 hlim=57 time=7.612 ms
  43. 16 bytes from 2a04:4e42:69::262, icmp_seq=1 hlim=57 time=9.220 ms
  44. 16 bytes from 2a04:4e42:69::262, icmp_seq=2 hlim=57 time=8.823 ms
  45.  
  46. --- dualstack.o.ssl.global.fastly.net ping6 statistics ---
  47. 3 packets transmitted, 3 packets received, 0.0% packet loss
  48. round-trip min/avg/max/std-dev = 7.612/8.552/9.220/0.838 ms
  49. %
  50. %
  51. %
  52. /* On the other window running tcpdump at the same time of success. */
  53. % sudo tcpdump -i wm0 -s 0 -vvv -n icmp6
  54. tcpdump: listening on wm0, link-type EN10MB (Ethernet), capture size 262144 bytes
  55. 01:35:17.692836 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) fd17:625c:f037:2:6b39:c50d:203:a7b > 2a04:4e42:69::262: [icmp6 sum ok] ICMP6, echo request, seq 0
  56. 01:35:17.699629 IP6 (class 0xff, hlim 57, next-header ICMPv6 (58) payload length: 16) 2a04:4e42:69::262 > fd17:625c:f037:2:6b39:c50d:203:a7b: [icmp6 sum ok] ICMP6, echo reply, seq 0
  57. 01:35:18.707382 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) fd17:625c:f037:2:6b39:c50d:203:a7b > 2a04:4e42:69::262: [icmp6 sum ok] ICMP6, echo request, seq 1
  58. 01:35:18.715580 IP6 (class 0xff, hlim 57, next-header ICMPv6 (58) payload length: 16) 2a04:4e42:69::262 > fd17:625c:f037:2:6b39:c50d:203:a7b: [icmp6 sum ok] ICMP6, echo reply, seq 1
  59. 01:35:19.710462 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) fd17:625c:f037:2:6b39:c50d:203:a7b > 2a04:4e42:69::262: [icmp6 sum ok] ICMP6, echo request, seq 2
  60. 01:35:19.718487 IP6 (class 0xff, hlim 57, next-header ICMPv6 (58) payload length: 16) 2a04:4e42:69::262 > fd17:625c:f037:2:6b39:c50d:203:a7b: [icmp6 sum ok] ICMP6, echo reply, seq 2
  61. 01:35:22.710690 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::6091:46c9:731b:c857 > fe80::5054:ff:fe12:3500: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has fe80::5054:ff:fe12:3500
  62. source link-address option (1), length 8 (1): 08:00:27:91:48:7d
  63. 0x0000: 0800 2791 487d
  64. 01:35:22.711748 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::5054:ff:fe12:3500 > fe80::6091:46c9:731b:c857: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is fe80::5054:ff:fe12:3500, Flags [router, solicited, override]
  65. destination link-address option (2), length 8 (1): 52:54:00:12:35:00
  66. 0x0000: 5254 0012 3500
  67. 01:35:23.702507 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::5054:ff:fe12:3500 > fd17:625c:f037:2:6b39:c50d:203:a7b: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has fd17:625c:f037:2:6b39:c50d:203:a7b
  68. source link-address option (1), length 8 (1): 52:54:00:12:35:00
  69. 0x0000: 5254 0012 3500
  70. 01:35:23.703357 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 24) fe80::6091:46c9:731b:c857 > fe80::5054:ff:fe12:3500: [icmp6 sum ok] ICMP6, neighbor advertisement, length 24, tgt is fd17:625c:f037:2:6b39:c50d:203:a7b, Flags [solicited]
  71. ^C
  72. 10 packets captured
  73. 12 packets received by filter
  74. 0 packets dropped by kernel
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