I have a problem receiving some icmp6 packets with a ns83820 card. I have ipv6
working on a PC, an alpha and an ARM, but the a second PC with a ns83820 card
is not seeing any router advertisement or neighour solicitation.
As soon as I use "tcpdump ip6" to look at the packets on that machine, I do
get all the stuff.
Everything works fine with ipv4.
What did I do wrong? Pointers?
Andres
config (dagobert):
2.4.20-pre7 on nForce415
01:07.0 Ethernet controller: National Semiconductor Corporation DP83820
10/100/1000 Ethernet Controller
root@dagobert src # ifconfig
eth0 Link encap:Ethernet HWaddr 00:40:F4:00:0B:88
inet addr:192.168.0.10 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: 3ffe:b80:96e:1:240:f4ff:fe00:b88/64 Scope:Global
inet6 addr: fe80::240:f4ff:fe00:b88/64 Scope:Link
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
ameyer@dagobert ameyer $ ping6 shibuya.cputoasters.com
PING shibuya.cputoasters.com(3ffe:b80:96e:1:240:96ff:fe40:96db) 56 data bytes
--- shibuya.cputoasters.com ping statistics ---
5 packets transmitted, 0 received, 100% packet loss, time 4010ms
root@shibuya ameyer # tcpdump -i eth1 ip6
tcpdump: listening on eth1
10:54:36.924983 3ffe:b80:96e:1:240:f4ff:fe00:b88 >
3ffe:b80:96e:1:240:96ff:fe40:96db: icmp6: echo request
10:54:36.925074 3ffe:b80:96e:1:240:96ff:fe40:96db > ff02::1:ff00:b88: icmp6:
neighbor sol: who has 3ffe:b80:96e:1:240:f4ff:fe00:b88
10:54:37.920942 3ffe:b80:96e:1:240:96ff:fe40:96db > ff02::1:ff00:b88: icmp6:
neighbor sol: who has 3ffe:b80:96e:1:240:f4ff:fe00:b88
10:54:37.933679 3ffe:b80:96e:1:240:f4ff:fe00:b88 >
3ffe:b80:96e:1:240:96ff:fe40:96db: icmp6: echo request
10:54:38.920944 3ffe:b80:96e:1:240:96ff:fe40:96db > ff02::1:ff00:b88: icmp6:
neighbor sol: who has 3ffe:b80:96e:1:240:f4ff:fe00:b88
10:54:38.933600 3ffe:b80:96e:1:240:f4ff:fe00:b88 >
3ffe:b80:96e:1:240:96ff:fe40:96db: icmp6: echo request
now with tcpdump ip6:
root@dagobert ameyer # tcpdump ip6
tcpdump: listening on eth0
10:59:40.279133 3ffe:b80:96e:1:240:f4ff:fe00:b88 >
3ffe:b80:96e:1:240:96ff:fe40:96db: icmp6: echo request
10:59:40.282933 3ffe:b80:96e:1:240:96ff:fe40:96db > ff02::1:ff00:b88: icmp6:
neighbor sol: who has 3ffe:b80:96e:1:240:f4ff:fe00:b88
10:59:40.282977 3ffe:b80:96e:1:240:f4ff:fe00:b88 >
3ffe:b80:96e:1:240:96ff:fe40:96db: icmp6: neighbor adv: tgt is
3ffe:b80:96e:1:240:f4ff:fe00:b88
ameyer@dagobert ameyer $ ping6 shibuya.cputoasters.com
PING shibuya.cputoasters.com(3ffe:b80:96e:1:240:96ff:fe40:96db) 56 data bytes
64 bytes from 3ffe:b80:96e:1:240:96ff:fe40:96db: icmp_seq=1 ttl=64 time=7.53
ms
64 bytes from 3ffe:b80:96e:1:240:96ff:fe40:96db: icmp_seq=2 ttl=64 time=3.08
ms
--
GnuPG: 355177EA
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