AT&T Uverse turned on IPV6 on my network 2 weeks ago. If I plug my laptop directly into the Uverse router, I recieve an IPv6 address, and am able to reach IPv6 addresses. If I plug my laptop directly into the Buffalo router, I recieve an IPv6 address, but do *NOT* get access to IPv6 devices on the internet. I *can* ping6 and traceroute6 those devices from the Buffalo telnet interface.
I just can't figure out why the buffalo won't route the IPv6 packets from inside the lan (18+ clients) properly. I've so far had no answers from #dd-wrt on Freenode.
Troubleshooting details follow:
radvd.conf:
interface br0 {
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
AdvLinkMTU 1480;
AdvSendAdvert on;
prefix 2602:306:31db:2f00::1/64 {
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
RDNSS 2602:<hidden>
{
AdvRDNSSLifetime 30;
};
DNSSL totalnetsolutions.net child1.lwtest.corp child2.lwtest.corp lwtest.corp mda.edu
{
AdvDNSSLLifetime 30;
};
};
Behind my dd-wrt router:
rob@kubuntu4:~$ ping6 centos6-1
PING centos6-1(2602:306:31db:2f00:<hidden>) 56 data bytes
64 bytes from 2602:306:31db:2f00:<hidden>: icmp_seq=1 ttl=64 time=84.8 ms
64 bytes from 2602:306:31db:2f00:<hidden>: icmp_seq=2 ttl=64 time=0.424 ms
^C
--- centos6-1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.424/42.621/84.818/42.197 ms
rob@kubuntu4:~$ ping6 tns02
PING tns02(2602:306:31db:2f00:<hidden>) 56 data bytes
64 bytes from 2602:306:31db:2f00:<hidden>: icmp_seq=1 ttl=64 time=1.32 ms
^C
--- tns02 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 1.324/1.324/1.324/0.000 ms
rob@kubuntu4:~$ dig AAAA dl.google.com +short
dl.l.google.com.
2607:f8b0:400e:c01::5b
rob@kubuntu4:~$ ping6 dl.google.com
PING dl.google.com(pb-in-x5b.1e100.net) 56 data bytes
^C
--- dl.google.com ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 2999ms
rob@kubuntu4:~$ ip -6 route
2602:306:31db:2f00::/64 dev eth0 proto kernel metric 256 expires 86399sec
2602:306:31db:2f00::/64 dev wlan0 proto kernel metric 256 expires 86399sec
fe80::/64 dev vmnet1 proto kernel metric 256
fe80::/64 dev vmnet8 proto kernel metric 256
fe80::/64 dev eth0 proto kernel metric 256
fe80::/64 dev wlan0 proto kernel metric 256
default via fe80::<hidden> dev eth0 proto ra metric 1024 expires 29sec
default via fe80::<hidden-same-as-above> dev wlan0 proto ra metric 1024 expires 29sec
rob@kubuntu4:~$ traceroute6 dl.google.com
traceroute to dl.l.google.com (2607:f8b0:4003:c01::5d) from 2602:306:31db:2f00:6267:20ff:fea4:b874, port 33434, from port 40060, 30 hops max, 60 bytes packe
ts
1 * * *
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *
And outside the dd-wrt router (connected directly to AT&T's Uverse router):
rob@kubuntu4:~$ traceroute6 dl.google.com
traceroute to dl.l.google.com (2607:f8b0:4002:c02::88) from 2602:306:31db:3770:221:ccff:fecf:e078, port 33434, from port 36343, 30 hops max, 60 bytes packets
1 2602:306:31db:3770::1 (2602:306:31db:3770::1) 1.730 ms * 2.938 ms
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * gg-in-x88.1e100.net (2607:f8b0:4002:c02::88) 47.503 ms 45.860 ms
rob@kubuntu4:~$ ip -6 route
2602:306:31db:3770::/64 dev eth0 proto kernel metric 256 expires 2591700sec
fe80::/64 dev vmnet1 proto kernel metric 256
fe80::/64 dev vmnet8 proto kernel metric 256
fe80::/64 dev eth0 proto kernel metric 256
default via fe80::<hidden> dev eth0 proto static metric 1
default via fe80::<hidden> dev eth0 proto ra metric 1024 expires 1500sec
When I manually added:
route -A inet6 add ::/0 gw fe80::36ef:44ff:fe79:9521 dev eth1
to the dd-wrt router, I get success from the router's telnet interface, but the same results from clients behind the router:
root@robhome:/jffs/tmp# route -A inet6
Kernel IPv6 routing table
Destination Next Hop Flags Metric Ref Use Iface
2001:470:1:18::119/128 fe80::36ef:44ff:fe79:9521 UGC 0 94 0 eth1
2404:6800:4008:c01::be/128 fe80::36ef:44ff:fe79:9521 UGC 0 120 0 eth1
2600:3c00::2:b401/128 fe80::36ef:44ff:fe79:9521 UGC 0 1 0 eth1
2602:306:31db:3770::/64 :: UA 256 0 0 eth1
fe80::/64 :: U 256 0 0 eth0
fe80::/64 :: U 256 0 0 br0
fe80::/64 :: U 256 0 0 ath0
fe80::/64 :: U 256 0 0 eth1
::/0 fe80::36ef:44ff:fe79:9521 UG 1 0 0 eth1
::1/128 :: U 0 0 1 lo
2602:306:31db:3770::/128 :: U 0 0 1 lo
2602:306:31db:3770:<hidden>/128 :: U 0 2 1 lo
fe80::/128 :: U 0 0 1 lo
fe80::/128 :: U 0 0 1 lo
fe80::/128 :: U 0 0 1 lo
fe80::/128 :: U 0 0 1 lo
fe80::<hidden>/128 :: U 0 1492 1 lo
fe80::<hidden>/128 :: U 0 0 1 lo
fe80::<hidden>/128 :: U 0 0 1 lo
fe80::<hidden>/128 :: U 0 2 1 lo
ff02::1/128 ff02::1 UC 0 16938 0 br0
ff02::fb/128 ff02::fb UC 0 41 0 br0
ff02::1:<hidden>/128 ff02::1:<hidden> UC 0 1 0 br0
ff02::1:<hidden>/128 ff02::1:<hidden> UC 0 3 0 br0
ff02::1:<hidden>/128 ff02::1:<hidden> UC 0 1 0 br0
ff02::1:<hidden>/128 ff02::1:<hidden> UC 0 1 0 br0
ff00::/8 :: U 256 0 0 eth0
ff00::/8 :: U 256 0 0 br0
ff00::/8 :: U 256 0 0 ath0
ff00::/8 :: U 256 0 0 eth1
root@robhome:/jffs/tmp# traceroute6 dl.google.com
traceroute to dl.google.com (2607:f8b0:4001:c05::5b), 30 hops max, 16 byte packets
1 2602:306:31db:3770::1 (2602:306:31db:3770::1) 1.546 ms * 0.996 ms
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 ig-in-x5b.1e100.net (2607:f8b0:4001:c05::5b) 35.134 ms 34.517 ms 35.110 ms
