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Issue with Windows 7 pinging XP box's Local Link IPv6 address
I am having an issue trying to get my Windows 7 box to ping the IPv6 local-link address on my Windows XP box. I have IPv6 enable on both machines. Both machines can ping the ::1 loop back and their own local-link IP's. Furthermore, the XP box can ping and receive and echo reply back from Windows 7 box. I ran the netsh interface ipv6> show neighbors command on both machines and they both see each other.
I have even ran a wireshark capture on both machines and I can see the echo request get to the XP machine, but no echo reply back gets back to the Windows 7 box. At first I noticed the hop limit was set to 0 on the Windows 7 box so I changed it to 128 like the XP box. I still had the problem. I then looked at the ICMPv6 packets and noticed a subtle difference in the ID field (see seciton 4.1 of RFC4443). The ID or Identifier field is set to ID: 0x0001 in the Window 7 echo requests and ID: 0x0000 in the XP echo request which get a reply.
I have also tried to see if it was a firewall issue, by turning off the firewalls on both computers which didn't work. Furthermore, I know the XP box is getting the echo requests (as seen in my wire shark capture).
I am at a loss now. Anyone have any ideas??