IPv6 - bad neighbor solicitation messages

Tom Pusateri pusateri at bangj.com
Fri Dec 11 04:07:29 UTC 2009 

Its been happening for a while.

I've attached the tcpdump textual output, the tcpdump raw saved file, and before and after netstat -s output.

Thanks,
Tom

On Dec 10, 2009, at 10:22 PM, Li, Qing wrote:

> I haven't made any significant changes in the IPv6 code
> for 3 months now. Could you please get a packet capture and 
> email it to me?
> 
> Thanks,
> 
> -- Qing
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22:59:51.008261 IP6 (hlim 63, next-header ICMPv6 (58) payload length: 16) 2610:28:1800:4001:225:ff:fef1:7305 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, echo request, length 16, seq 0
22:59:51.008291 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, echo reply, length 16, seq 0
22:59:52.562108 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:225:ff:fef1:7305 > ff02::1:ff45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:25:00:f1:73:05
22:59:52.562134 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2610:28:1800:4001:2a0:c9ff:fe45:326c, Flags [solicited, override]
	  destination link-address option (2), length 8 (1): 00:a0:c9:45:32:6c
22:59:52.562382 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 120) fe80::20e:cff:fe74:9778 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, redirect, length 120, 2610:28:1800:4001:225:ff:fef1:7305 to 2610:28:1800:4001:225:ff:fef1:7305
	  redirected header option (4), length 80 (10): 
	    0x0000:  040a 0000 0000 0000 6000 0000 0020 3afe
	    0x0010:  2610 0028 1800 4001 02a0 c9ff fe45 326c
	    0x0020:  2610 0028 1800 4001 0225 00ff fef1 7305
	    0x0030:  8800 2ee6 6000 0000 2610 0028 1800 4001
	    0x0040:  02a0 c9ff fe45 326c 0201 00a0 c945 326c
22:59:53.562387 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:225:ff:fef1:7305 > ff02::1:ff45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:25:00:f1:73:05
22:59:53.562405 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2610:28:1800:4001:2a0:c9ff:fe45:326c, Flags [solicited, override]
	  destination link-address option (2), length 8 (1): 00:a0:c9:45:32:6c
22:59:53.562556 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 120) fe80::20e:cff:fe74:9778 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, redirect, length 120, 2610:28:1800:4001:225:ff:fef1:7305 to 2610:28:1800:4001:225:ff:fef1:7305
	  redirected header option (4), length 80 (10): 
	    0x0000:  040a 0000 0000 0000 6000 0000 0020 3afe
	    0x0010:  2610 0028 1800 4001 02a0 c9ff fe45 326c
	    0x0020:  2610 0028 1800 4001 0225 00ff fef1 7305
	    0x0030:  8800 2ee6 6000 0000 2610 0028 1800 4001
	    0x0040:  02a0 c9ff fe45 326c 0201 00a0 c945 326c
22:59:54.562607 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:225:ff:fef1:7305 > ff02::1:ff45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:25:00:f1:73:05
22:59:54.562630 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2610:28:1800:4001:2a0:c9ff:fe45:326c, Flags [solicited, override]
	  destination link-address option (2), length 8 (1): 00:a0:c9:45:32:6c
22:59:54.562770 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 120) fe80::20e:cff:fe74:9778 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, redirect, length 120, 2610:28:1800:4001:225:ff:fef1:7305 to 2610:28:1800:4001:225:ff:fef1:7305
	  redirected header option (4), length 80 (10): 
	    0x0000:  040a 0000 0000 0000 6000 0000 0020 3afe
	    0x0010:  2610 0028 1800 4001 02a0 c9ff fe45 326c
	    0x0020:  2610 0028 1800 4001 0225 00ff fef1 7305
	    0x0030:  8800 2ee6 6000 0000 2610 0028 1800 4001
	    0x0040:  02a0 c9ff fe45 326c 0201 00a0 c945 326c
22:59:56.008687 IP6 (hlim 63, next-header ICMPv6 (58) payload length: 16) 2610:28:1800:4001:225:ff:fef1:7305 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, echo request, length 16, seq 5
22:59:56.008704 IP6 (hlim 64, next-header ICMPv6 (58) payload length: 16) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, echo reply, length 16, seq 5
22:59:56.008825 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 104) fe80::20e:cff:fe74:9778 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, redirect, length 104, 2610:28:1800:4001:225:ff:fef1:7305 to 2610:28:1800:4001:225:ff:fef1:7305
	  redirected header option (4), length 64 (8): 
	    0x0000:  0408 0000 0000 0000 6000 0000 0010 3a3f
	    0x0010:  2610 0028 1800 4001 02a0 c9ff fe45 326c
	    0x0020:  2610 0028 1800 4001 0225 00ff fef1 7305
	    0x0030:  8100 d5d9 0e94 0005 4b21 c3bb 000e 1c77
22:59:56.008837 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::2a0:c9ff:fe45:326c > fe80::20e:cff:fe74:9778: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has fe80::20e:cff:fe74:9778
	  source link-address option (1), length 8 (1): 00:a0:c9:45:32:6c
22:59:56.008947 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 24) fe80::20e:cff:fe74:9778 > fe80::2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, neighbor advertisement, length 24, tgt is fe80::20e:cff:fe74:9778, Flags [router, solicited]
22:59:56.009587 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001::1 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:0e:0c:74:97:78
22:59:57.009900 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001::1 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:0e:0c:74:97:78
22:59:57.563329 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:225:ff:fef1:7305 > ff02::1:ff45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:25:00:f1:73:05
22:59:57.563348 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2610:28:1800:4001:2a0:c9ff:fe45:326c, Flags [solicited, override]
	  destination link-address option (2), length 8 (1): 00:a0:c9:45:32:6c
22:59:58.010222 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001::1 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:0e:0c:74:97:78
22:59:58.563549 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:225:ff:fef1:7305 > ff02::1:ff45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:25:00:f1:73:05
22:59:58.563565 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2610:28:1800:4001:2a0:c9ff:fe45:326c, Flags [solicited, override]
	  destination link-address option (2), length 8 (1): 00:a0:c9:45:32:6c
22:59:58.563679 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 120) fe80::20e:cff:fe74:9778 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, redirect, length 120, 2610:28:1800:4001:225:ff:fef1:7305 to 2610:28:1800:4001:225:ff:fef1:7305
	  redirected header option (4), length 80 (10): 
	    0x0000:  040a 0000 0000 0000 6000 0000 0020 3afe
	    0x0010:  2610 0028 1800 4001 02a0 c9ff fe45 326c
	    0x0020:  2610 0028 1800 4001 0225 00ff fef1 7305
	    0x0030:  8800 2ee6 6000 0000 2610 0028 1800 4001
	    0x0040:  02a0 c9ff fe45 326c 0201 00a0 c945 326c
22:59:59.563828 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:225:ff:fef1:7305 > ff02::1:ff45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:25:00:f1:73:05
22:59:59.563846 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) 2610:28:1800:4001:2a0:c9ff:fe45:326c > 2610:28:1800:4001:225:ff:fef1:7305: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2610:28:1800:4001:2a0:c9ff:fe45:326c, Flags [solicited, override]
	  destination link-address option (2), length 8 (1): 00:a0:c9:45:32:6c
22:59:59.564017 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::20e:cff:fe74:9778 > ff02::1:ff45:326c: [icmp6 sum ok] ICMP6, neighbor solicitation, length 32, who has 2610:28:1800:4001:2a0:c9ff:fe45:326c
	  source link-address option (1), length 8 (1): 00:0e:0c:74:97:78
22:59:59.564030 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::2a0:c9ff:fe45:326c > fe80::20e:cff:fe74:9778: [icmp6 sum ok] ICMP6, neighbor advertisement, length 32, tgt is 2610:28:1800:4001:2a0:c9ff:fe45:326c, Flags [solicited, override]
	  destination link-address option (2), length 8 (1): 00:a0:c9:45:32:6c
22:59:59.564243 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 120) fe80::20e:cff:fe74:9778 > 2610:28:1800:4001:2a0:c9ff:fe45:326c: [icmp6 sum ok] ICMP6, redirect, length 120, 2610:28:1800:4001:225:ff:fef1:7305 to 2610:28:1800:4001:225:ff:fef1:7305
	  redirected header option (4), length 80 (10): 
	    0x0000:  040a 0000 0000 0000 6000 0000 0020 3afe
	    0x0010:  2610 0028 1800 4001 02a0 c9ff fe45 326c
	    0x0020:  2610 0028 1800 4001 0225 00ff fef1 7305
	    0x0030:  8800 2ee6 6000 0000 2610 0028 1800 4001
	    0x0040:  02a0 c9ff fe45 326c 0201 00a0 c945 326c
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