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 =
wikipedia.org   AAAA IPv6 address = 2620:0:861:ed1a::1
        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 =

  • 2
    Post some nslookup results, that will indicate if its a DNS issue – Lorenz Nov 7 '14 at 7:41
  • Added to the bottom of my posting – FeelsLikeANewb Nov 7 '14 at 17:29
  • Could you also provide the output of nslookup -q=any wikipedia.org because the data above just indicates the used DNS server and not an actual answer. – Lorenz Nov 7 '14 at 21:00

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