[radvd-devel-l] Radvd problem with MIPv6 CN
k k
kelvinskk at hotmail.com
Thu Feb 14 02:55:41 EST 2008
Hi,
sorry for the delayed reply. I'm currently doing a project regarding this. Here are the debug outputs on MN for 3 scenerios:
1. With CN(radvd running)
2. Without CN(radvd running)
3. Without CN(radvd not running)
1. With CN(radvd running):
[root at localhost ~]# radvd -d 5 -m stderr
[Feb 14 14:34:27] radvd: version 1.1 started
[Feb 14 14:34:27] radvd: mtu for ath0 is 1500
[Feb 14 14:34:27] radvd: hardware type for ath0 is 1
[Feb 14 14:34:27] radvd: link layer token length for ath0 is 48
[Feb 14 14:34:27] radvd: prefix length for ath0 is 64
[Feb 14 14:34:27] radvd: interface definition for ath0 is ok
[Feb 14 14:34:27] radvd: sending RA on ath0
[Feb 14 14:34:27] radvd: setting timer: 3.00 secs
[Feb 14 14:34:27] radvd: setting timer: 3 secs 0 usecs
[Feb 14 14:34:27] radvd: calling schedule_timer from set_timer context
[Feb 14 14:34:27] radvd: calling alarm: 2 secs, 999859 usecs
[Feb 14 14:34:27] radvd: recvmsg len=56
[Feb 14 14:34:27] radvd: if_index 8
[Feb 14 14:34:27] radvd: found Interface: ath0
[Feb 14 14:34:28] radvd: recvmsg len=56
[Feb 14 14:34:28] radvd: if_index 8
[Feb 14 14:34:28] radvd: found Interface: ath0
[Feb 14 14:34:30] radvd: recvmsg len=56
[Feb 14 14:34:30] radvd: if_index 8
[Feb 14 14:34:30] radvd: found Interface: ath0
[Feb 14 14:34:30] radvd: check_time_diff, difference: -1 sec + 998168 usec
[Feb 14 14:34:30] radvd: timer_handler called for ath0
[Feb 14 14:34:30] radvd: sending RA on ath0
[Feb 14 14:34:30] radvd: setting timer: 1.62 secs
[Feb 14 14:34:30] radvd: setting timer: 1 secs 621286 usecs
[Feb 14 14:34:30] radvd: calling schedule_timer from set_timer context
[Feb 14 14:34:30] radvd: calling alarm: 1 secs, 621261 usecs
[Feb 14 14:34:30] radvd: calling schedule_timer from alarm_handler context
[Feb 14 14:34:30] radvd: calling alarm: 1 secs, 621200 usecs
[Feb 14 14:34:30] radvd: recvmsg len=56
[Feb 14 14:34:30] radvd: if_index 8
[Feb 14 14:34:30] radvd: found Interface: ath0
[Feb 14 14:34:32] radvd: check_time_diff, difference: -1 sec + 997612 usec
[Feb 14 14:34:32] radvd: timer_handler called for ath0
[Feb 14 14:34:32] radvd: sending RA on ath0
[Feb 14 14:34:32] radvd: setting timer: 2.41 secs
[Feb 14 14:34:32] radvd: setting timer: 2 secs 406259 usecs
[Feb 14 14:34:32] radvd: calling schedule_timer from set_timer context
[Feb 14 14:34:32] radvd: calling alarm: 2 secs, 406225 usecs
[Feb 14 14:34:32] radvd: calling schedule_timer from alarm_handler context
[Feb 14 14:34:32] radvd: calling alarm: 2 secs, 406103 usecs
[Feb 14 14:34:32] radvd: recvmsg len=56
[Feb 14 14:34:32] radvd: if_index 8
[Feb 14 14:34:32] radvd: found Interface: ath0
[Feb 14 14:34:32] radvd: recvmsg len=56
[Feb 14 14:34:32] radvd: if_index 8
[Feb 14 14:34:32] radvd: found Interface: ath0
[Feb 14 14:34:33] radvd: recvmsg len=56
[Feb 14 14:34:33] radvd: if_index 8
[Feb 14 14:34:33] radvd: found Interface: ath0
[Feb 14 14:34:33] radvd: recvmsg len=64
[Feb 14 14:34:33] radvd: if_index 8
[Feb 14 14:34:33] radvd: found Interface: ath0
[Feb 14 14:34:33] radvd: our AdvValidLifetime on ath0 for 2001:106:1100:: doesn't agree with fe80::211:95ff:feca:5fce
[Feb 14 14:34:33] radvd: our AdvPreferredLifetime on ath0 for 2001:106:1100:: doesn't agree with fe80::211:95ff:feca:5fce
[Feb 14 14:34:34] radvd: check_time_diff, difference: -1 sec + 998511 usec
[Feb 14 14:34:34] radvd: timer_handler called for ath0
[Feb 14 14:34:34] radvd: sending RA on ath0
[Feb 14 14:34:34] radvd: setting timer: 2.87 secs
[Feb 14 14:34:34] radvd: setting timer: 2 secs 873373 usecs
[Feb 14 14:34:34] radvd: calling schedule_timer from set_timer context
[Feb 14 14:34:34] radvd: calling alarm: 2 secs, 873339 usecs
[Feb 14 14:34:34] radvd: calling schedule_timer from alarm_handler context
[Feb 14 14:34:34] radvd: calling alarm: 2 secs, 873279 usecs
[Feb 14 14:34:34] radvd: recvmsg len=56
[Feb 14 14:34:34] radvd: if_index 8
[Feb 14 14:34:34] radvd: found Interface: ath0
[Feb 14 14:34:36] radvd: recvmsg len=56
[Feb 14 14:34:36] radvd: if_index 8
[Feb 14 14:34:36] radvd: found Interface: ath0
[Feb 14 14:34:37] radvd: check_time_diff, difference: -1 sec + 997676 usec
[Feb 14 14:34:37] radvd: timer_handler called for ath0
[Feb 14 14:34:37] radvd: sending RA on ath0
[root at localhost ~]# /sbin/ip -6 a l
1: lo: mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
8: ath0: mtu 1500
inet6 2001:106:1100:0:211:95ff:feca:5855/64 scope global dynamic
valid_lft 2592000sec preferred_lft 604800sec
inet6 fe80::211:95ff:feca:5855/64 scope link
valid_lft forever preferred_lft forever
9: ip6tnl1 at ath0: mtu 1460
inet6 2001:106:2700:0:211:95ff:feca:5855/128 scope global dynamic flags 10
valid_lft 11647sec preferred_lft 9647sec
inet6 fe80::211:95ff:feca:5855/64 scope link
valid_lft forever preferred_lft forever
[root at localhost ~]# /sbin/ip -6 r l
default from 2001:106:2700:0:211:95ff:feca:5855 dev ip6tnl1 proto 15 metric 12 8 expires 21333956sec mtu 1460 advmss 1400 metric 10 4294967295
unreachable default dev lo proto none metric -1 error -101 metric 10 255
2001:106:1100::1 dev ath0 metric 1 expires 21334262sec mtu 1500 advmss 1440 me tric 10 4294967295
2001:106:1100:0:21c:f0ff:fe8f:2adc dev ath0 metric 1 expires 21333958sec mtu 1 500 advmss 1440 metric 10 4294967295
2001:106:1100::/64 dev ath0 proto kernel metric 256 expires 11584sec mtu 1500 advmss 1440 metric 10 4294967295
fe80::/64 dev ip6tnl1 metric 256 expires 21333881sec mtu 1460 advmss 1400 metr ic 10 4294967295
fe80::/64 dev ath0 metric 256 expires 21333954sec mtu 1500 advmss 1440 metric 10 4294967295
ff00::/8 dev ath0 metric 256 expires 21333641sec mtu 1500 advmss 1440 metric 1 0 4294967295
ff00::/8 dev ip6tnl1 metric 256 expires 21333881sec mtu 1460 advmss 1400 metri c 10 4294967295
default via fe80::211:95ff:feca:5855 dev ath0 proto ra metric 1024 expires 21 334373sec mtu 1500 advmss 1440 metric 10 4294967295
unreachable default dev lo proto none metric -1 error -101 metric 10 255
unreachable default dev lo proto none metric -1 error -101 metric 10 255
[root at localhost ~]# tcpdump -n -vvv -s0 -i any icmp6
\tcpdump: WARNING: Promiscuous mode not supported on the "any" device
tcpdump: listening on any, link-type LINUX_SLL (Linux cooked), capture size 65535 bytes
14:37:57.931316 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::211:95ff:feca:5855> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:11:95:ca:58:55
0x0000: 0011 95ca 5855
14:37:57.931328 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::211:95ff:feca:5855> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:11:95:ca:58:55
0x0000: 0011 95ca 5855
14:37:58.213217 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::21c:f0ff:fe8f:2adc> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:1c:f0:8f:2a:dc
0x0000: 001c f08f 2adc
14:37:58.219309 IP6 (hlim 255, next-header: ICMPv6 (58), length: 64) fe80::211:95ff:feca:5fce> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 64
hop limit 64, Flags [none], pref medium, router lifetime 30s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 2592000s, pref. time 604800s
0x0000: 40e0 0027 8d00 0009 3a80 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:11:95:ca:5f:ce
0x0000: 0011 95ca 5fce
advertisement interval option (7), length 8 (1): 10000s
0x0000: 0000 0000 2710
14:37:59.879302 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::211:95ff:feca:5855> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:11:95:ca:58:55
0x0000: 0011 95ca 5855
14:37:59.879315 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::211:95ff:feca:5855> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
2. Without CN(radvd running)
[root at localhost ~]# radvd -d 5 -m stderr
[Feb 14 15:34:03] radvd: version 1.1 started
[Feb 14 15:34:03] radvd: mtu for ath0 is 1500
[Feb 14 15:34:03] radvd: hardware type for ath0 is 1
[Feb 14 15:34:03] radvd: link layer token length for ath0 is 48
[Feb 14 15:34:03] radvd: prefix length for ath0 is 64
[Feb 14 15:34:03] radvd: interface definition for ath0 is ok
[Feb 14 15:34:03] radvd: sending RA on ath0
[Feb 14 15:34:03] radvd: setting timer: 3.00 secs
[Feb 14 15:34:03] radvd: setting timer: 3 secs 0 usecs
[Feb 14 15:34:03] radvd: calling schedule_timer from set_timer context
[Feb 14 15:34:03] radvd: calling alarm: 2 secs, 999974 usecs
[Feb 14 15:34:03] radvd: recvmsg len=56
[Feb 14 15:34:03] radvd: if_index 8
[Feb 14 15:34:03] radvd: found Interface: ath0
[Feb 14 15:34:05] radvd: recvmsg len=56
[Feb 14 15:34:05] radvd: if_index 8
[Feb 14 15:34:05] radvd: found Interface: ath0
[Feb 14 15:34:06] radvd: recvmsg len=64
[Feb 14 15:34:06] radvd: if_index 8
[Feb 14 15:34:06] radvd: found Interface: ath0
[Feb 14 15:34:06] radvd: our AdvValidLifetime on ath0 for 2001:106:1100:: doesn't agree with fe80::211:95ff:feca:5fce
[Feb 14 15:34:06] radvd: our AdvPreferredLifetime on ath0 for 2001:106:1100:: doesn't agree with fe80::211:95ff:feca:5fce
[Feb 14 15:34:06] radvd: check_time_diff, difference: -1 sec + 998399 usec
[Feb 14 15:34:06] radvd: timer_handler called for ath0
[Feb 14 15:34:06] radvd: sending RA on ath0
[Feb 14 15:34:06] radvd: setting timer: 1.75 secs
[Feb 14 15:34:06] radvd: setting timer: 1 secs 748393 usecs
[Feb 14 15:34:06] radvd: calling schedule_timer from set_timer context
[Feb 14 15:34:06] radvd: calling alarm: 1 secs, 748365 usecs
[Feb 14 15:34:06] radvd: calling schedule_timer from alarm_handler context
[Feb 14 15:34:06] radvd: calling alarm: 1 secs, 748305 usecs
[Feb 14 15:34:06] radvd: recvmsg len=56
[Feb 14 15:34:06] radvd: if_index 8
[Feb 14 15:34:06] radvd: found Interface: ath0
[Feb 14 15:34:06] radvd: recvmsg len=56
[Feb 14 15:34:06] radvd: if_index 8
[Feb 14 15:34:06] radvd: found Interface: ath0
[Feb 14 15:34:08] radvd: check_time_diff, difference: -1 sec + 996663 usec
[Feb 14 15:34:08] radvd: timer_handler called for ath0
[Feb 14 15:34:08] radvd: sending RA on ath0
[Feb 14 15:34:08] radvd: setting timer: 1.72 secs
[Feb 14 15:34:08] radvd: setting timer: 1 secs 718709 usecs
[Feb 14 15:34:08] radvd: calling schedule_timer from set_timer context
[Feb 14 15:34:08] radvd: calling alarm: 1 secs, 718684 usecs
[Feb 14 15:34:08] radvd: calling schedule_timer from alarm_handler context
[Feb 14 15:34:08] radvd: calling alarm: 1 secs, 718629 usecs
[Feb 14 15:34:08] radvd: recvmsg len=56
[Feb 14 15:34:08] radvd: if_index 8
[Feb 14 15:34:08] radvd: found Interface: ath0
[Feb 14 15:34:08] radvd: recvmsg len=56
[Feb 14 15:34:08] radvd: if_index 8
[Feb 14 15:34:08] radvd: found Interface: ath0
[Feb 14 15:34:09] radvd: recvmsg len=56
[Feb 14 15:34:09] radvd: if_index 8
[Feb 14 15:34:09] radvd: found Interface: ath0
[root at localhost ~]# /sbin/ip -6 a l
1: lo: mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
8: ath0: mtu 1500
inet6 2001:106:1100:0:211:95ff:feca:5855/64 scope global dynamic
valid_lft 12000sec preferred_lft 10000sec
inet6 fe80::211:95ff:feca:5855/64 scope link
valid_lft forever preferred_lft forever
9: ip6tnl1 at ath0: mtu 1460
inet6 2001:106:2700:0:211:95ff:feca:5855/128 scope global dynamic flags 10
valid_lft 11856sec preferred_lft 9856sec
inet6 fe80::211:95ff:feca:5855/64 scope link
valid_lft forever preferred_lft forever
[root at localhost ~]# /sbin/ip -6 r l
default from 2001:106:2700:0:211:95ff:feca:5855 dev ip6tnl1 proto 15 metric 128 expires 21334180sec mtu 1460 advmss 1400 metric 10 4294967295
unreachable default dev lo proto none metric -1 error -101 metric 10 255
2001:106:1100::1 dev ath0 metric 1 expires 21334188sec mtu 1500 advmss 1440 metric 10 4294967295
2001:106:1100:0:21c:f0ff:fe8f:2adc dev ath0 metric 1 expires 21334189sec mtu 1500 advmss 1440 metric 10 4294967295
2001:106:1100::/64 dev ath0 proto kernel metric 256 expires 11813sec mtu 1500 advmss 1440 metric 10 4294967295
fe80::/64 dev ip6tnl1 metric 256 expires 21330369sec mtu 1460 advmss 1400 metric 10 4294967295
fe80::/64 dev ath0 metric 256 expires 21334178sec mtu 1500 advmss 1440 metric 10 4294967295
ff00::/8 dev ip6tnl1 metric 256 expires 21330369sec mtu 1460 advmss 1400 metric 10 4294967295
ff00::/8 dev ath0 metric 256 expires 21333934sec mtu 1500 advmss 1440 metric 10 4294967295
default via fe80::21c:f0ff:fe8f:2adc dev ath0 proto ra metric 1024 expires 21334373sec mtu 1500 advmss 1440 metric 10 4294967295
unreachable default dev lo proto none metric -1 error -101 metric 10 255
unreachable default dev lo proto none metric -1 error -101 metric 10 255
[root at localhost ~]# tcpdump -n -vvv -s0 -i any icmp6
15:39:11.121015 IP6 (hlim 64, next-header: ICMPv6 (58), length: 152) 2001:106:1100:0:211:95ff:feca:5855> 2001:106:1100:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, time exceeded in-transit, length 152 for 2001:106:2700::1
15:39:11.121038 IP6 (hlim 64, next-header: ICMPv6 (58), length: 112) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, destination unreachable, length 112, unreachable address 2001:106:1100:0:21c:f0ff:fe8f:2adc
15:39:11.279490 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4257
15:39:11.328844 IP6 (hlim 64, next-header: ICMPv6 (58), length: 152) 2001:106:1100:0:211:95ff:feca:5855> 2001:106:1100:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, time exceeded in-transit, length 152 for 2001:106:2700::1
15:39:11.328868 IP6 (hlim 64, next-header: ICMPv6 (58), length: 112) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, destination unreachable, length 112, unreachable address 2001:106:1100:0:21c:f0ff:fe8f:2adc
15:39:12.073117 IP6 (hlim 62, next-header: ICMPv6 (58), length: 64) 2001:106:1100:0:21c:f0ff:fe8f:2adc> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4249
15:39:12.073191 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo reply, length 64, seq 4249
15:39:12.073783 IP6 (hlim 255, next-header: ICMPv6 (58), length: 200) fe80::211:95ff:feca:5855> 2001:106:1100:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, redirect, length 200, 2001:106:2700::1 to fe80::211:95ff:feca:5855
destination link-address option (2), length 8 (1): 00:11:95:ca:58:55
0x0000: 0011 95ca 5855
redirected header option (4), length 152 (19):
0x0000: 0201 0011 95ca 5855 0413 0000 0000 0000
0x0010: 6000 0000 0068 2940 2001 0106 1100 0000
0x0020: 0211 95ff feca 5855 2001 0106 2700 0000
0x0030: 0000 0000 0000 0001 6000 0000 0040 3a40
0x0040: 2001 0106 2700 0000 0211 95ff feca 5855
0x0050: 2001 0106 1100 0000 021c f0ff fe8f 2adc
0x0060: 8100 0e37 ee09 1099 6ff0 b347 d7a8 0600
0x0070: 0809 0a0b 0c0d 0e0f 1011 1213 1415 1617
0x0080: 1819 1a1b 1c1d 1e1f 2021 2223 2425 2627
0x0090: 2829 2a2b 2c2d 2e2f
0x0000: 0000 0000 0000 6000 0000 0068 2940 2001
0x0010: 0106 1100 0000 0211 95ff feca 5855 2001
0x0020: 0106 2700 0000 0000 0000 0000 0001 6000
0x0030: 0000 0040 3a40 2001 0106 2700 0000 0211
0x0040: 95ff feca 5855 2001 0106 1100 0000 021c
0x0050: f0ff fe8f 2adc 8100 0e37 ee09 1099 6ff0
0x0060: b347 d7a8 0600 0809 0a0b 0c0d 0e0f 1011
0x0070: 1213 1415 1617 1819 1a1b 1c1d 1e1f 2021
0x0080: 2223 2425 2627 2829 2a2b 2c2d 2e2f 3031
0x0090: 3233 3435 3637
15:39:12.126766 IP6 (hlim 64, next-header: ICMPv6 (58), length: 152) 2001:106:1100:0:211:95ff:feca:5855> 2001:106:1100:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, time exceeded in-transit, length 152 for 2001:106:2700::1
15:39:12.126797 IP6 (hlim 64, next-header: ICMPv6 (58), length: 112) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, destination unreachable, length 112, unreachable address 2001:106:1100:0:21c:f0ff:fe8f:2adc
15:39:12.279557 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4258
15:39:12.330041 IP6 (hlim 64, next-header: ICMPv6 (58), length: 152) 2001:106:1100:0:211:95ff:feca:5855> 2001:106:1100:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, time exceeded in-transit, length 152 for 2001:106:2700::1
15:39:12.330064 IP6 (hlim 64, next-header: ICMPv6 (58), length: 112) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, destination unreachable, length 112, unreachable address 2001:106:1100:0:21c:f0ff:fe8f:2adc
15:39:12.421597 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::21c:f0ff:fe8f:2adc> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:1c:f0:8f:2a:dc
0x0000: 001c f08f 2adc
15:39:12.775890 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::211:95ff:feca:5855> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:11:95:ca:58:55
0x0000: 0011 95ca 5855
15:39:12.775901 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::211:95ff:feca:5855> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:11:95:ca:58:55
0x0000: 0011 95ca 5855
3. Without CN(radvd not running):
[root at localhost ~]# /sbin/ip -6 a l
1: lo: mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
8: ath0: mtu 1500
inet6 2001:106:1100:0:211:95ff:feca:5855/64 scope global dynamic
valid_lft 12000sec preferred_lft 10000sec
inet6 fe80::211:95ff:feca:5855/64 scope link
valid_lft forever preferred_lft forever
9: ip6tnl1 at ath0: mtu 1460
inet6 2001:106:2700:0:211:95ff:feca:5855/128 scope global dynamic flags 10
valid_lft 11418sec preferred_lft 9418sec
inet6 fe80::211:95ff:feca:5855/64 scope link
valid_lft forever preferred_lft forever
[root at localhost ~]# /sbin/ip -6 r l
default from 2001:106:2700:0:211:95ff:feca:5855 dev ip6tnl1 proto 15 metric 12 8 expires 21333745sec mtu 1460 advmss 1400 metric 10 4294967295
unreachable default dev lo proto none metric -1 error -101 metric 10 255
2001:106:1100::1 dev ath0 metric 1 expires 21333753sec mtu 1500 advmss 1440 me tric 10 4294967295
2001:106:1100:0:21c:f0ff:fe8f:2adc dev ath0 metric 1 expires 21333754sec mtu 1 500 advmss 1440 metric 10 4294967295
2001:106:1100::/64 dev ath0 proto kernel metric 256 expires 11921sec mtu 1500 advmss 1440 metric 10 4294967295
fe80::/64 dev ip6tnl1 metric 256 expires 21329934sec mtu 1460 advmss 1400 metr ic 10 4294967295
fe80::/64 dev ath0 metric 256 expires 21334293sec mtu 1500 advmss 1440 metric 10 4294967295
ff00::/8 dev ip6tnl1 metric 256 expires 21329934sec mtu 1460 advmss 1400 metri c 10 4294967295
ff00::/8 dev ath0 metric 256 expires 21333499sec mtu 1500 advmss 1440 metric 1 0 4294967295
default via fe80::21c:f0ff:fe8f:2adc dev ath0 proto ra metric 1024 expires 21 334368sec mtu 1500 advmss 1440 metric 10 4294967295
unreachable default dev lo proto none metric -1 error -101 metric 10 255
unreachable default dev lo proto none metric -1 error -101 metric 10 255
[root at localhost ~]# tcpdump -n -vvv -s0 -i any icmp6
pdump: WARNING: Promiscuous mode not supported on the "any" device
tcpdump: listening on any, link-type LINUX_SLL (Linux cooked), capture size 65535 bytes
15:45:06.120835 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::21c:f0ff:fe8f:2adc> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:1c:f0:8f:2a:dc
0x0000: 001c f08f 2adc
15:45:06.171884 IP6 (hlim 62, next-header: ICMPv6 (58), length: 64) 2001:106:1100:0:21c:f0ff:fe8f:2adc> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4603
15:45:06.171971 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo reply, length 64, seq 4603
15:45:06.462768 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4611
15:45:06.463539 IP6 (hlim 255, next-header: ICMPv6 (58), length: 200) fe80::21c:f0ff:fe8f:2adc> 2001:106:1100:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, redirect, length 200, 2001:106:2700::1 to 2001:106:1100::1
destination link-address option (2), length 8 (1): 00:11:95:ca:5f:ce
0x0000: 0011 95ca 5fce
redirected header option (4), length 152 (19):
0x0000: 0201 0011 95ca 5fce 0413 0000 0000 0000
0x0010: 6000 0000 0068 2940 2001 0106 1100 0000
0x0020: 0211 95ff feca 5855 2001 0106 2700 0000
0x0030: 0000 0000 0000 0001 6000 0000 0040 3a40
0x0040: 2001 0106 2700 0000 0211 95ff feca 5855
0x0050: 2001 0106 1100 0000 021c f0ff fe8f 2adc
0x0060: 8000 8264 af0a 1203 82f1 b347 8e0f 0700
0x0070: 0809 0a0b 0c0d 0e0f 1011 1213 1415 1617
0x0080: 1819 1a1b 1c1d 1e1f 2021 2223 2425 2627
0x0090: 2829 2a2b 2c2d 2e2f
0x0000: 0000 0000 0000 6000 0000 0068 2940 2001
0x0010: 0106 1100 0000 0211 95ff feca 5855 2001
0x0020: 0106 2700 0000 0000 0000 0000 0001 6000
0x0030: 0000 0040 3a40 2001 0106 2700 0000 0211
0x0040: 95ff feca 5855 2001 0106 1100 0000 021c
0x0050: f0ff fe8f 2adc 8000 8264 af0a 1203 82f1
0x0060: b347 8e0f 0700 0809 0a0b 0c0d 0e0f 1011
0x0070: 1213 1415 1617 1819 1a1b 1c1d 1e1f 2021
0x0080: 2223 2425 2627 2829 2a2b 2c2d 2e2f 3031
0x0090: 3233 3435 3637
15:45:06.464757 IP6 (hlim 62, next-header: ICMPv6 (58), length: 64) 2001:106:1100:0:21c:f0ff:fe8f:2adc> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, echo reply, length 64, seq 4611
15:45:07.171843 IP6 (hlim 62, next-header: ICMPv6 (58), length: 64) 2001:106:1100:0:21c:f0ff:fe8f:2adc> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4604
15:45:07.171925 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo reply, length 64, seq 4604
15:45:07.466864 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4612
15:45:07.467630 IP6 (hlim 255, next-header: ICMPv6 (58), length: 200) fe80::21c:f0ff:fe8f:2adc> 2001:106:1100:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, redirect, length 200, 2001:106:2700::1 to 2001:106:1100::1
destination link-address option (2), length 8 (1): 00:11:95:ca:5f:ce
0x0000: 0011 95ca 5fce
redirected header option (4), length 152 (19):
0x0000: 0201 0011 95ca 5fce 0413 0000 0000 0000
0x0010: 6000 0000 0068 2940 2001 0106 1100 0000
0x0020: 0211 95ff feca 5855 2001 0106 2700 0000
0x0030: 0000 0000 0000 0001 6000 0000 0040 3a40
0x0040: 2001 0106 2700 0000 0211 95ff feca 5855
0x0050: 2001 0106 1100 0000 021c f0ff fe8f 2adc
0x0060: 8100 4939 ee09 11e2 b8f1 b347 505c 0800
0x0070: 0809 0a0b 0c0d 0e0f 1011 1213 1415 1617
0x0080: 1819 1a1b 1c1d 1e1f 2021 2223 2425 2627
0x0090: 2829 2a2b 2c2d 2e2f
0x0000: 0000 0000 0000 6000 0000 0068 2940 2001
0x0010: 0106 1100 0000 0211 95ff feca 5855 2001
0x0020: 0106 2700 0000 0000 0000 0000 0001 6000
0x0030: 0000 0040 3a40 2001 0106 2700 0000 0211
0x0040: 95ff feca 5855 2001 0106 1100 0000 021c
0x0050: f0ff fe8f 2adc 8100 4939 ee09 11e2 b8f1
0x0060: b347 505c 0800 0809 0a0b 0c0d 0e0f 1011
0x0070: 1213 1415 1617 1819 1a1b 1c1d 1e1f 2021
0x0080: 2223 2425 2627 2829 2a2b 2c2d 2e2f 3031
0x0090: 3233 3435 3637
15:44:41.271527 IP6 (hlim 255, next-header: ICMPv6 (58), length: 56) fe80::21c:f0ff:fe8f:2adc> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 56
hop limit 64, Flags [none], pref medium, router lifetime 9s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 12000s, pref. time 10000s
0x0000: 40e0 0000 2ee0 0000 2710 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:1c:f0:8f:2a:dc
0x0000: 001c f08f 2adc
15:44:41.361125 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4586
15:44:41.363143 IP6 (hlim 62, next-header: ICMPv6 (58), length: 64) 2001:106:1100:0:21c:f0ff:fe8f:2adc> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, echo reply, length 64, seq 4586
15:44:41.889350 IP6 (hlim 255, next-header: ICMPv6 (58), length: 64) fe80::211:95ff:feca:5fce> ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 64
hop limit 64, Flags [none], pref medium, router lifetime 30s, reachable time 0s, retrans time 0s
prefix info option (3), length 32 (4): 2001:106:1100::/64, Flags [onlink, auto, router], valid time 2592000s, pref. time 604800s
0x0000: 40e0 0027 8d00 0009 3a80 0000 0000 2001
0x0010: 0106 1100 0000 0000 0000 0000 0000
source link-address option (1), length 8 (1): 00:11:95:ca:5f:ce
0x0000: 0011 95ca 5fce
advertisement interval option (7), length 8 (1): 10000s
0x0000: 0000 0000 2710
15:44:42.171401 IP6 (hlim 62, next-header: ICMPv6 (58), length: 64) 2001:106:1100:0:21c:f0ff:fe8f:2adc> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4579
15:44:42.171469 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo reply, length 64, seq 4579
15:44:42.365177 IP6 (hlim 64, next-header: ICMPv6 (58), length: 64) 2001:106:2700:0:211:95ff:feca:5855> 2001:106:1100:0:21c:f0ff:fe8f:2adc: [icmp6 sum ok] ICMP6, echo request, length 64, seq 4587
15:44:42.366621 IP6 (hlim 62, next-header: ICMPv6 (58), length: 64) 2001:106:1100:0:21c:f0ff:fe8f:2adc> 2001:106:2700:0:211:95ff:feca:5855: [icmp6 sum ok] ICMP6, echo reply, length 64, seq 4587
I've tried to understand the debug outputs but I dont really know whats the main problem. Could you help me out with it?
Thanks & Regards,
KiaN
----------------------------------------
> Date: Mon, 11 Feb 2008 13:40:40 +0200
> From: pekkas at netcore.fi
> To: radvd-devel-l at litech.org
> CC: kelvinskk at hotmail.com
> Subject: Re: [radvd-devel-l] Radvd problem with MIPv6 CN
>
> On Mon, 11 Feb 2008, k k wrote:
>> I'm currently experiencing some problems with running radvd together
>> with MIPv6. (NOTE: I'm running radvd and MIPv6 on my MN and CN as
>> well). My network works fine when there's a Correspondent Node (CN)
>> in the foreign network. However, when I ran radvd together with
>> MIPv6 without the CN, there were major ping problems(refer to
>> below).
> ...
>> As mentioned earlier, MIPv6 and radvd worked out fine when the CN
>> was running. Next I tested MIPv6 and radvd without the CN and it
>> gave me ping fluctuation problems as shown:
>>
>> With radvd on MN:
>> [root at localhost ~]# ping6 2001:106:1100:0:21c:f0ff:fe8f:2adc
>> PING 2001:106:1100:0:21c:f0ff:fe8f:2adc(2001:106:1100:0:21c:f0ff:fe8f:2adc) 56 data bytes
>> From 2001:106:2700:0:211:95ff:feca:5855 icmp_seq=0 Destination unreachable: Address unreachable
>> 64 bytes from 2001:106:1100:0:21c:f0ff:fe8f:2adc: icmp_seq=1 ttl=62 time=1.08 ms
> ...
>> When I executed a ?killall radvd?, the ping was stable again. Upon
>> activating radvd again, the ping went unstable. Has anyone had this
>> problem before or can someone help me out?
>
> You don't describe why you want to run radvd on the MN. Are you
> trying to do some NEMO experiments?
>
> You're pinging CN's address from the MN., but are sometimes getting
> ICMP "address unreachable" errors from the MN's home address.
>
> In other words, the "localhost" in question cannot perform address
> resolution for the CN address.
>
> My suspicion is that when you try to run radvd on the MN, you have two
> default routes on the MN, or you have strange interface configuration
> on the MN, which prevents address resolution from working properly.
>
> To find out more about this, I suggest you run radvd on MN with
> debugging enabled (e.g. with '-d 5 -m stderr' toggles), get '/sbin/ip
> -6 a l' printing before you start radvd, and compare it to '/sbin/ip
> -6 a l' listing when the problem is active. Similar steps should be
> sone with '/sbin/ip -6 r l'. You may also want to run 'tcpdump -n
> -vvv -s0 -i any icmp6' to capture ICMPv6 traffic on the MN.
>
> --
> Pekka Savola "You each name yourselves king, yet the
> Netcore Oy kingdom bleeds."
> Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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