I'm using a 6to4 tunnel from tunnelbroker.net to gain access to the Internet via IPv6. Even after getting the tunnel built and properly established, I wasn't able to get access to IPv6 web pages because the DNS wasn't resolving.
I overcame this by manually setting my Windows 7 PC to use Google's public DNS. However, while that did grant me access to IPv6-enabled sites, I immediately lost access to regular IPv4 sites. Same DNS issue as I originally had with IPv6; I can ping an IPv4 address, but can't access one from a browser. I manually set my IPv4 to Google's Open DNS as well (the IPv4 one obviously) but still no luck.
Does anyone know why I can't have IPv4 and IPv6 simultaneously? Aren't the DNS services for each protocol separate?
P.S. I set the 6to4 tunnel endpoint to be on my router rather than my PC, not sure if that has something to do with it.
EDIT: Got IPv6 working again, but still can't browse to a URL if it doesn't have IPv6 enabled. Realized I can browse to ipv4 addresses IF I have an actual 4-octet ipv4 address to put into the browser address bar, but a text url won't work.
Here are the results of nslookup with an IPv6 DNS specified:
C:\Users\Alix>nslookup -q=any wikipedia.org Server: google-public-dns-a.google.com Address: 2001:4860:4860::8888 Non-authoritative answer: wikipedia.org internet address = 126.96.36.199 wikipedia.org AAAA IPv6 address = 2620:0:861:ed1a::1 wikipedia.org primary name server = ns0.wikimedia.org responsible mail addr = hostmaster.wikimedia.org serial = 2014110418 refresh = 43200 (12 hours) retry = 7200 (2 hours) expire = 1209600 (14 days) default TTL = 3600 (1 hour) wikipedia.org nameserver = ns1.wikimedia.org wikipedia.org nameserver = ns2.wikimedia.org wikipedia.org nameserver = ns0.wikimedia.org wikipedia.org MX preference = 10, mail exchanger = polonium.wikimedia.org wikipedia.org MX preference = 50, mail exchanger = lead.wikimedia.org wikipedia.org text = "google-site-verification=AMHkgs-4ViEvIJf5znZle-BSE2EPNFqM1nDJGRyn2qk"