North American Network Operators Group

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Re: IPv6 reverse lookup - lame delegation?

  • From: Paul Vixie
  • Date: Wed Feb 11 17:14:59 2004

> i understand some implementation (BIND 9.3?) does this,

i think it's all bind9, but certainly all bind 9.2 and later.

> but is the behavior documented somewhere in the set of RFCs?

yes.  marka just quoted all of that.

> 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.

as a practical matter, it is impossible to ensure that all name servers
and resolvers understand DNAME.  but it is very possible to ensure that
a given zone, such as "" in ISC's case, is only
served by authority servers who understand DNAME and do CNAME synthesis.

therefore it is very practical to consider a DNAME-based transition.