Cannot ping with IPv6

[Antonio00]

I have installed Windows Vista on my pc with IPv6 and Teredo installed and they are also enabled, but it seems that I cannot ping any hosts on the local network that consists of one XP machine or internet. These both computers are connected to a Standard router which is a Dell TrueMobile 2300 and IPv4 only. But this IPv4 router should not matter, taking into account that, Teredo can be enabled on both computers. When I run ipconfig then I get the following:

For Vista:

Ethernet adapter Loopback:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::504b:717d:6870:54b6%12
Autoconfiguration IPv4 Address. . : 169.254.84.182
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
IPv6 Address. . . . . . . . . . . : 2001:0:d5c7:a2ca:0:f2f6:adfd:5d0
IPv6 Address. . . . . . . . . . . : 2001:0:d5c7:a2ca:0:f2f6:adfd:5d0e
Link-local IPv6 Address . . . . . : fe80::5efe:169.254.84.182%9
Link-local IPv6 Address . . . . . : fe80::5efe:192.168.2.4%9
Link-local IPv6 Address . . . . . : fe80::5efe:192.168.2.6%9
Link-local IPv6 Address . . . . . : fe80::ffff:ffff:fffd%9
Link-local IPv6 Address . . . . . : fe80::504b:717d:6870:54b6%9
Link-local IPv6 Address . . . . . : fe80::80da:92d4:339a:6712%9
IPv4 Address. . . . . . . . . . . : 192.168.2.6
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Local Area Connection* 9:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::5efe:192.168.2.6%11
Default Gateway . . . . . . . . . :

Tunnel adapter Local Area Connection* 11:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::5efe:169.254.84.182%14
Default Gateway . . . . . . . . . :
----------------------------------------------------------------

For XP SP3

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 192.168.2.4
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : fe80::ffff:ffff:fffd%4
Default Gateway . . . . . . . . . :

Tunnel adapter Automatic Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : fe80::5efe:192.168.2.4%2
Default Gateway . . . . . . . . . :

[Antonio00]

Alright, I have fixed this issue on Vista once and for all. I was able to access different IPv6 websites but I was not sure why only a few was not accessible, it might be because of the Teredo server.

[lg101]

Hi All,

IPV6 clients do not connect to ipv6 server under link local NAT Setup, unless the interface ids (also known as zone id) of the clients and server are same.

To give more clarity let me put it in an example,

A NAT Server and a client under it

if the NAT client link local address is fe80::ec84:1634:d659:2aba%4
and Server link local address is fe80::211:5bff:fec2:82dc%10

then the client and server cannot communicate with each other since the interface id is 4 and 10 respectively.

only when the interface ids are same, the machines can ping each other.

one work around is that client pinging the server with client interface id
ex: ping fe80::211:5bff:fec2:82dc%4 instead of fe80::211:5bff:fec2:82dc%10

else client has to disable and enable its network interface 6 times to equal the interface id of server.