nanog mailing list archives
Re: IPv6 reverse lookup - lame delegation?
From: itojun () itojun org (Jun-ichiro itojun Hagino)
Date: Thu, 12 Feb 2004 07:07:17 +0900 (JST)
... <http://www.isc.org/pubs/tn/?tn=isc-tn-2002-1.txt> ...last i heard from you, you said that DNAME would be evaluated by recursive resolver and will not be visible to end client... what changed?according to this experiment: +--- | ;; QUESTION SECTION: | 3.7.a.1.5.0.e.f.f.f.b.5.9.0.2.0.b.b.0.0.3.0.0.0.8.f.4.0.1.0.0.2.ip6.int. \ | IN PTR | | ;; ANSWER SECTION: | 8.f.4.0.1.0.0.2.ip6.int. 7200 IN DNAME 8.f.4.0.1.0.0.2.ip6.arpa. | 3.7.a.1.5.0.e.f.f.f.b.5.9.0.2.0.b.b.0.0.3.0.0.0.8.f.4.0.1.0.0.2.ip6.int. \ | 0 IN CNAME \ | 3.7.a.1.5.0.e.f.f.f.b.5.9.0.2.0.b.b.0.0.3.0.0.0.8.f.4.0.1.0.0.2.ip6.arpa. | 3.7.a.1.5.0.e.f.f.f.b.5.9.0.2.0.b.b.0.0.3.0.0.0.8.f.4.0.1.0.0.2.ip6.arpa. \ | 7200 IN PTR sa.vix.com. +--- ...there is a DNAME provided, which most resolvers will just ignore, and there is a synthesized (TTL=0) CNAME provided. the main purpose of the DNAME is to tell the authority server to synthesize these CNAMEs.
i understand some implementation (BIND 9.3?) does this, but is the behavior documented somewhere in the set of RFCs? for instance, does djbdns do it? does MS DNS server do it? i'm very skeptical about the possibility (or reality) of DNAME-based transition. itojun
Current thread:
- Re: IPv6 reverse lookup - lame delegation?, (continued)
- Re: IPv6 reverse lookup - lame delegation? Ronald van der Pol (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Mark Andrews (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Pekka Savola (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Edward Lewis (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Paul Vixie (Feb 11)
- RE: IPv6 reverse lookup - lame delegation? Jeroen Massar (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Mark . Andrews (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Paul Vixie (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Jun-ichiro itojun Hagino (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Paul Vixie (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Jun-ichiro itojun Hagino (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Paul Vixie (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? Todd Vierling (Feb 11)
- Re: IPv6 reverse lookup - lame delegation? bill (Feb 11)
- RE: IPv6 reverse lookup - lame delegation? Jeroen Massar (Feb 10)
- Re: IPv6 reverse lookup - lame delegation? Mark Andrews (Feb 10)