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Author Topic: Resolve forward DNS using only IPv6  (Read 10829 times)

cwasson

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Resolve forward DNS using only IPv6
« on: November 05, 2008, 01:08:25 PM »

I'm trying to test a single stack IPv6 client and how it might work with DNS.  I am coming in over a HE IPv6 tunnel so pointed my client at 2001:b48:10::2 (ns2.he.net).

This works fine for he.net addresses like www.he.net, ns5.he.net, he.net - but seems to fail for all other domains.   I see lots of postings about rdns, but not much for forward dns using only IPv6. 

Am I using the wrong server to resolve addresses outside he.net?   Can someone recommend an IPv6 nameserver which can resolve random domains?   I thought the root and tld IPv6 glue was there to make this work now.

Thanks!

Craig
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broquea

  • Sr. Network Engineer, HE.NET AS6939
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Re: Resolve forward DNS using only IPv6
« Reply #1 on: November 05, 2008, 03:03:20 PM »

The ns1-5.he.net name servers are not recursive and only answer for domains we host.

We have some caching name servers dualstack:
ns1.fmt.he.net
ns2.fmt.he.net
ns1.fmt2.he.net
ns1.sjc.he.net
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piojan

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Re: Resolve forward DNS using only IPv6
« Reply #2 on: December 31, 2008, 07:13:15 AM »

Also: ns1.nyc.he.net
No on the EU side?

How about adding that list to an new entry at: http://www.he.net/adm/

also the nyc is not recursive if asked on ipv4

and the above mention dnses don't respond over ipv4 (at least for my ip):
Code: [Select]
# dig -4 he.net @ns1.sjc.he.net

; <<>> DiG 9.6.0b1 <<>> -4 he.net @ns1.sjc.he.net
;; global options: +cmd
;; connection timed out; no servers could be reached
Cheers,
PJ
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broquea

  • Sr. Network Engineer, HE.NET AS6939
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Re: Resolve forward DNS using only IPv6
« Reply #3 on: December 31, 2008, 11:33:23 AM »

I'll ask NY crew about that server, but it wasn't one I'm aware of that is a caching NS, or what hosts it allows to use it (or if there are even restrictions).

ns5.he.net is in the EU but since we only provide transit out there and not colo yet, we haven't installed a caching NS. We install those in our colo facilities.

"dig -4 he.net @ns1.sjc.he.net" works fine for me both at home on Comcast and obviously here at work.

Also: ns1.nyc.he.net
No on the EU side?

How about adding that list to an new entry at: http://www.he.net/adm/

also the nyc is not recursive if asked on ipv4

and the above mention dnses don't respond over ipv4 (at least for my ip):
Code: [Select]
# dig -4 he.net @ns1.sjc.he.net

; <<>> DiG 9.6.0b1 <<>> -4 he.net @ns1.sjc.he.net
;; global options: +cmd
;; connection timed out; no servers could be reached
Cheers,
PJ

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piojan

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Re: Resolve forward DNS using only IPv6
« Reply #4 on: December 31, 2008, 11:45:59 AM »

I'll ask NY crew about that server, but it wasn't one I'm aware of that is a caching NS, or what hosts it allows to use it (or if there are even restrictions).
Recurses for ipv6.
Quote
"dig -4 he.net @ns1.sjc.he.net" works fine for me both at home on Comcast and obviously here at work.
So probably "restrictions" - as I didn't found a dns server from the above mention that did a look up over from my ipv4 - nothing to worry (83.16.0.0/13)

Cheers,
PJ
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