Are underscores no longer supported in Bind 9.4?
barmar at alum.mit.edu
Sat Mar 3 06:46:47 UTC 2007
In article <esa68j$mfp$1 at sf1.isc.org>,
Kevin Darcy <kcd at daimlerchrysler.com> wrote:
> Jake Morrisey wrote:
> > Does bind 9.4 no longer support underscores (_) in the A records?
> > I know I have these in many records in versions before 9.4.
> > Here is the error that I am getting now.
> > Feb 28 18:29:54 t141 named: db.example.com:77:
> > test_underscore.example.com: bad owner name (check-names)
> > As soon as I remove the A record with the underscore it in, everything is
> > fine and the zone loads.
> > Is this a new rule / RFC?
> No, actually, it's a very *old*, arguably obsolete RFC (RFC 952).
> BIND has flip-flopped over the years on whether it should be in the
> business of enforcing *hostname* (as opposed to DNS) standards. Recently
> the pendulum has swung back in the direction of "we'll enforce them"
The check-names option has been in BIND since 8.x, I think. The only
flip-flopping, I believe, has been on what the default setting should be.
Barry Margolin, barmar at alum.mit.edu
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