Some strange problem here, I have got an ipv6 address by DHCP, however, ping ipv6.google.com gets network unreachable. Other people in the same house using windows7 has ipv6 working fine. So, there seems to exists some mistake in my ubuntu configuration. BTW, there is vmware installed in my computer, and my windows7 in vmware can also get ipv6 address and work fine (using bridged network).
I will give some informations here.
ifconfig -a eth0
eth0 Link encap:Ethernet HWaddr 00:25:22:de:5b:50
inet addr:114.212.203.128 Bcast:114.212.207.255 Mask:255.255.248.0
inet6 addr: 2001:da8:1007:4001::3:373d/128 Scope:Global
inet6 addr: fe80::225:22ff:fede:5b50/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:78747 errors:0 dropped:0 overruns:0 frame:0
TX packets:87348 errors:0 dropped:0 overruns:0 carrier:3
collisions:0 txqueuelen:1000
RX bytes:52280256 (52.2 MB) TX bytes:15413471 (15.4 MB)
ping6 -I eth0 2404:6800:4005:805::100e
PING 2404:6800:4005:805::100e(2404:6800:4005:805::100e) from 2001:da8:1007:4001::3:373d eth0: 56 data bytes
From 2001:da8:1007:4001::3:373d icmp_seq=1 Destination unreachable: Address unreachable
From 2001:da8:1007:4001::3:373d icmp_seq=2 Destination unreachable: Address unreachable
From 2001:da8:1007:4001::3:373d icmp_seq=3 Destination unreachable: Address unreachable
From 2001:da8:1007:4001::3:373d icmp_seq=4 Destination unreachable: Address unreachable
^C
--- 2404:6800:4005:805::100e ping statistics ---
6 packets transmitted, 0 received, +4 errors, 100% packet loss, time 4999ms
ip -6 route
2001:da8:1007:4001::3:373d dev eth0 proto kernel metric 256
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::da49:bff:fe91:e98f dev eth0 proto static metric 1
default via fe80::da49:bff:fe91:e98f dev eth0 proto ra metric 1024 expires 380sec
ip -6 neigh
fe80::da49:bff:fe91:e98f dev eth0 router INCOMPLETE
cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
iface lo inet6 loopback
So, does any one has ideas?
ip6tables
settings. You might be filtering ND traffic by accident