Situation:
There is an ipv4 only router in our network and every computer is connected to it (wifi or cable). A server with ipv4 and ipv6 is also connected to this router. The server has been configured with tunnelbrokers for 6to4 tunneling and radvd. Clients in the network have the right prefix and can ping each other via ipv6. But they can't ping to the internet until they first ping Server (the one with the tunnel). I found somewhere that it's an icmp problem, but I couldn't find solution.
Is the problem that the router is ipv4 only?
- server and clients run linux
- router runs dd-wrt without ipv6 support :(
Ping try:
standa@standa-laptop:~$ ping6 ipv6.google.com PING ipv6.google.com(2a00:1450:8007::69) 56 data bytes ^C --- ipv6.google.com ping statistics --- 29 packets transmitted, 0 received, 100% packet loss, time 28223ms standa@standa-laptop:~$ ping6 2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478 PING 2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478(2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478) 56 data bytes 64 bytes from 2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478: icmp_seq=1 ttl=64 time=3.55 ms 64 bytes from 2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478: icmp_seq=2 ttl=64 time=0.311 ms 64 bytes from 2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478: icmp_seq=3 ttl=64 time=0.269 ms 64 bytes from 2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478: icmp_seq=4 ttl=64 time=0.292 ms ^C --- 2001:470:XXXX:XXXX:21c:c0ff:fe2b:6478 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3000ms rtt min/avg/max/mdev = 0.269/1.107/3.559/1.415 ms standa@standa-laptop:~$ ping6 ipv6.google.com PING ipv6.google.com(2a00:1450:8007::69) 56 data bytes 64 bytes from 2a00:1450:8007::69: icmp_seq=1 ttl=57 time=20.7 ms 64 bytes from 2a00:1450:8007::69: icmp_seq=2 ttl=57 time=20.2 ms 64 bytes from 2a00:1450:8007::69: icmp_seq=3 ttl=57 time=23.4 ms ^C --- ipv6.google.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2001ms rtt min/avg/max/mdev = 20.267/21.479/23.413/1.392 ms
UPDATE: Radvd config
interface eth0 { AdvSendAdvert on; MinRtrAdvInterval 3; MaxRtrAdvInterval 10; AdvLinkMTU 1280; prefix 2001:470:1f0a:1511:1::/64 { AdvOnLink on; AdvAutonomous on; AdvRouterAddr on; }; };
UPDATE 2: Without connection
ip -6 neigh fe80::21c:c0ff:fe2b:6478 dev wlan1 lladdr 00:1c:c0:2b:64:78 router REACHABLE
With connection (after ping)
fe80::21c:c0ff:fe2b:6478 dev wlan1 lladdr 00:1c:c0:2b:64:78 router STALE 2001:470:1f0a:1511::1 dev wlan1 lladdr 00:1c:c0:2b:64:78 router REACHABLE
Neighbour solicitation happends while pinging:
fe80::21c:c0ff:fe2b:6478 2001:470:1f0a:1511:21c:bfff:fe60:b389 ICMPv6 Neighbor solicitation 2001:470:1f0a:1511:21c:bfff:fe60:b389 fe80::21c:c0ff:fe2b:6478 ICMPv6 Neighbor advertisement