Date: Sat, 04 Jan 2003 12:47:29 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Gregory Neil Shapiro <gshapiro@FreeBSD.ORG> Cc: "Gary W. Swearingen" <swear@attbi.com>, freebsd-current@FreeBSD.ORG Subject: Re: [resolution] Re: sendmail (Re: 5.0-RC2 informal PR: 90 sec sendmail delay) Message-ID: <3E174861.97A1584C@mindspring.com> References: <rgptrg1uzx.trg@localhost.localdomain> <3E1352BC.4043921B@mindspring.com> <20030101145232.A391@zardoc.esmtp.org> <3E13D095.FC52B758@mindspring.com> <c9622346-1e23-11d7-83f4-0002b32ee8e9@iv.nn.kiev.ua> <ihadihx3fq.dih_-_@localhost.localdomain> <3E163C0A.C0CF8146@mindspring.com> <8p4r8pwgl6.r8p@localhost.localdomain> <15895.766.628111.450121@horsey.gshapiro.net>
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Gregory Neil Shapiro wrote:
> The latest FreeBSD 4.7-STABLE /etc/namedb/named.conf contains:
>
> // RFC 3152
> zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA" {
> type master;
> file "localhost-v6.rev";
> };
>
> // RFC 1886 -- deprecated
> zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.INT" {
> type master;
> file "localhost-v6.rev";
> };
Which is what's missing in the DNS where the reverse lookup fails;
likely, it's a bug that FreeBSD does not come with a caching DNS
server enabled by default, out of the box.
The FreeBSD library bug is that the /etc/hosts file entry:
::1
is not canonized before being compared, for the reverse lookup.
It can probably be worked around by spcifying:
0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1
as the left hand side for the IPv6 loopback address, instead of ::1,
in the /etc/hosts file. I don't recommend this, since it would not
encourage the author of the IPv6 resovler code to fix the bug they
introduced.
-- Terry
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