ipv6 addresses

Router. eth0 is external, with the 6to4 bound to it. eth1 is internal:
2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qlen 1000
    inet6 fe80::200:24ff:fec8:dc50/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qlen 1000
    inet6 2002:d976:2d51:2:0:24ff:fec8:dc51/48 scope global 
       valid_lft forever preferred_lft forever
    inet6 fe80::200:24ff:fec8:dc51/64 scope link 
       valid_lft forever preferred_lft forever
7: 6to4@NONE: <NOARP,UP,10000> mtu 1480 
    inet6 2002:d976:2d51::1/16 scope global 
       valid_lft forever preferred_lft forever
    inet6 ::217.118.45.81/128 scope global 
       valid_lft forever preferred_lft forever


Internal host:
2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qlen 1000
    inet6 2002:d976:2d51:2:20e:cff:fec3:20c2/64 scope global dynamic 
       valid_lft 2591756sec preferred_lft 604556sec
    inet6 fe80::20e:cff:fec3:20c2/64 scope link 
       valid_lft forever preferred_lft forever



Internal host routing table:
$ ip -6 route show
2002::/16 dev eth0  proto kernel  metric 256  expires 2592074sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth0  metric 256  expires 20480319sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev eth0  metric 256  expires 20480319sec mtu 1500 advmss 1440 hoplimit 4294967295
default via fe80::200:24ff:fec8:dc51 dev eth0  proto kernel  metric 1024  expires 1712sec mtu 1500 advmss 1440 hoplimit 64


Router routing table:
# ip -6 route show
::/96 via :: dev 6to4  metric 256  expires 21250840sec mtu 1480 advmss 1420 hoplimit 4294967295
2002:d976:2d51:2::/64 dev eth1  metric 256  expires 21334240sec mtu 1500 advmss 1440 hoplimit 4294967295
2002::/16 dev 6to4  metric 256  expires 21251107sec mtu 1480 advmss 1420 hoplimit 4294967295
2002::/16 dev eth1  proto kernel  metric 256  expires 2517730sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth0  metric 256  expires 19582370sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev eth1  metric 256  expires 19582370sec mtu 1500 advmss 1440 hoplimit 4294967295
fe80::/64 dev 6to4  metric 256  expires 21251107sec mtu 1480 advmss 1420 hoplimit 4294967295
ff00::/8 dev eth0  metric 256  expires 19582370sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev eth1  metric 256  expires 19582370sec mtu 1500 advmss 1440 hoplimit 4294967295
ff00::/8 dev 6to4  metric 256  expires 21251107sec mtu 1480 advmss 1420 hoplimit 4294967295
default via ::192.88.99.1 dev 6to4  metric 1026  expires 21251111sec mtu 1480 advmss 1420 hoplimit 4294967295