Re: IPv6 reverse lookup - lame delegation?

[Paul Vixie <paul () vix com>]

[itojun]
> 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 "8.f.4.0.1.0.0.2.ip6.arpa" 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.