Are underscores no longer supported in Bind 9.4?
jmorrisey71 at gmail.com
Sun Mar 4 06:48:12 UTC 2007
On 2/28/07, Mark Andrews <Mark_Andrews at isc.org> wrote:
> No. It's a 20 year old rule. See RFC 952 and RFC 1123.
> The later extends the syntax to allow leading digits.
> Labels in hostnames are restricted to letters, digits and
> hypens (LDH).
Thank you for the previous references.
As a followup are underscores allowed in CNAME records? Are CNAME
records not bound by these RFCs? I would think they would have the
same rules but the named-checkzone and the named-compilezone have no
problem with a CNAME having an underscore.
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