FYI - Comcast has dual stacked enabled recursive name servers, see the following web site:
http://dns.comcast.net/dns-ip-addresses3.php John On 4/23/10 8:42 AM, "Jared Mauch" <ja...@puck.nether.net> wrote: > > > On Apr 23, 2010, at 5:49 AM, Dave Hart wrote: > >> On Fri, Apr 23, 2010 at 08:26 UTC, Steve Bertrand <st...@ibctech.ca> wrote: >>> - in WHOIS, I have ns1 and ns2.onlyv6.com listed as the authoritative >>> name servers >>> >>> - both of these servers *only* have IPv6 addresses >> >> Which seems a bit far afield from reality to me. Yes, there are lots >> of folks with IPv6 connectivity and v4-only recursive DNS servers. I >> don't think ISPs will have problems setting aside a handful of IPv4 >> addresses for authoritative DNS infrastructure to work around this >> until v6 transport in recursive DNS servers is common enough. > > Not really, having your nameservers be IPv6 enabled is a reasonable thing to > do. > > FYI: on comcast I see SERVFAIL, meaning their recursives do not have IPv6 > transport. > > (I know we have that at my employer on our customer-facing recursives). > > ; <<>> DiG 9.6.0-APPLE-P2 <<>> any www.onlyv6.com. > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 54773 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 > > ;; QUESTION SECTION: > ;www.onlyv6.com. IN ANY > > ;; Query time: 1605 msec > ;; SERVER: 68.87.72.130#53(68.87.72.130) > ;; WHEN: Fri Apr 23 08:41:08 2010 > ;; MSG SIZE rcvd: 32 > > > ========================================= John Jason Brzozowski Comcast Cable e) mailto:john_brzozow...@cable.comcast.com o) 609-377-6594 m) 484-962-0060 w) http://www.comcast6.net =========================================
