Quote Originally Posted by wpte View Post
Sorry Dapper, I'm also not quite sure what the problem is.
but concerning the path MTU... are you sure the tunnel mtu and ttl is filled in?
for mtu I use 1280, and ttl 64.
perhaps you can try to make the MTU larger?

for me everything runs fine except "Test with IPv4 DNS record" because I use openDNS, which is a false positive
Thanks for taking the time to reply. Te details of my configuration can be seen in the screen shot on the previous page. The values for the settings you mentioned are the same.

When I did an ICMP buffer test, with the router in place, the mtu maximum was 1232, anything above that gave a destination unreachable. The problem is, I'm not sure what the ICMP overhead for IPv6 is. On Ipv4 it's 28 bits.

There is obviously something wrong with the configuration of my router, but I have no idea what it may be or where to look. As I said in an earlier post, placing the PC in the DMZ and/or disabling the firewall has no effect on the problem, which is simply that with IPv6 enabled, sites sit continuously in the 'waiting for xxxxx site' If I disable IPv6 on the network adapter, I connect instantly. If I remove the router but leave IPv6 enabled and configured on the PC, I connect instantly.

I'm thinking now I might just reset the router to factory defaults and see what happens. I might also try some different firmware, perhaps Tomato or OpenWRT.

Final question, could this be an iptables issue, if so, what might it be?

Thanks