Interesting behavior with wildcard domains
warren at kumari.net
Wed Feb 24 19:22:44 UTC 2016
On Wed, Feb 24, 2016 at 12:30 PM Mark Andrews <marka at isc.org> wrote:
> In message <E7385EF3-1128-4F81-87FD-EF5CB55ED92B at nau.edu>, Mathew Ian Eis
> Illegal character '-' in input file.
> > Hi BIND,
> > Ive encountered (quite by accident) an interesting behavior in BIND with
> > wildcard domains:
> > The relevant configuration is a zone; e.g. bar.com, with what Ill call a
> > second level wildcard host, e.g. *.foo.bar.com A 10.10.10.5 in that
> > (as opposed to what might be considered the more usual wildcard host
> > record of *.bar.com).
> > buz.foo.bar.com returns A 10.10.10.5 as expected.
> > However, a query for foo.bar.com returns NOERR with zero results, when I
> > would expect a NXDOMAIN.
> Why? If *.foo.bar.com exists then foo.bar.com, bar.com and com all exist.
> > Anyone know if the NOERR with zero results is the expected / correct
> > behavior?
> It is the expected behaviour
Nah, it is the *correct* behavior, fairly clearly it is not the *expected*
(sorry, I'm feeling ornery today...)
> > Thanks in advance,
> > Mathew Eis
> > Northern Arizona University
> > Information Technology Services
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