I had no idea the IPv6 network could be so problematic. Do you suppose it's a problem with the router or network driver not being able to handle the IPv6 protocall?
Homegroup networking works absolutely perfectly for me for some reason.
The only time I had a problem with IPv6 is in the early builds where it would cut out every twenty minutes with an error showing in Event viewer. That problem seemed to be fixed with the later builds.
You would think that an IPv6 problem would only effect Homegroups instead of wrecking havoc on the IPv4 protocall which seems to be happening.