[67469] in North American Network Operators' Group
Re: IPv6 reverse lookup - lame delegation?
daemon@ATHENA.MIT.EDU (bill)
Tue Feb 10 09:50:40 2004
From: bill <bmanning@karoshi.com>
To: itojun@itojun.org (Jun-ichiro itojun Hagino)
Date: Tue, 10 Feb 2004 06:48:42 -0800 (PST)
Cc: nanog@merit.edu
In-Reply-To: <20040210125840.0C2C9EB@coconut.itojun.org> from "Jun-ichiro itojun Hagino" at Feb 10, 2004 09:58:40 PM
Errors-To: owner-nanog-outgoing@merit.edu
>
>
> if i try to log into my machines back in tokyo by IPv6 SSH, it takes
> very long time. i guess i found the reason - (possible) lame delegation
> of blah.ip6.int. ip6.arpa. query returns instantly.
> how could we fix it?
the ip6.int entry times out, no servers reached.
the ip6.arpa entry fails immediately w/ NXDOMAIN.
the delegation for 3ffe:37:: is
7.3.e.f.f.3.ip6.int. in ns gemini.psc.edu.
in ns charon.psc.edu.
.....
these servers are -NOT- responding to queries.
perhaps you should contact Michael Lambert for more detail.
>
> itojun
>
>
> % dig e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.int. ptr
>
> ; <<>> DiG 9.2.3 <<>> e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.int. ptr
> ;; global options: printcmd
> ;; connection timed out; no servers could be reached
>
> % dig e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.arpa. ptr
>
> ; <<>> DiG 9.2.3 <<>> e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.arpa. ptr
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19137
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;e.5.5.e.2.4.e.f.f.f.e.4.5.0.2.0.0.0.0.0.0.0.0.1.0.0.7.3.e.f.f.3.ip6.arpa. IN PTR
>
> ;; AUTHORITY SECTION:
> ip6.arpa. 10569 IN SOA dns1.icann.org. hostmaster.icann.org. 2003080400 3600 1800 604800 10800
>
> ;; Query time: 1 msec
> ;; SERVER: 127.0.0.1#53(0.0.0.0)
> ;; WHEN: Tue Feb 10 21:57:17 2004
> ;; MSG SIZE rcvd: 151
>
