Although we're moving away from it, we found it useful for naming router
interfaces, i.e. te1-2.routername.company.com, without having to create a
separate sub-domain for each router.

I thought at some point periods were allowed in hostnames, and they do work
without escaping them.

Thanks...

Vyto



> -----Original Message-----
> From: [email protected] [mailto:bind-
> [email protected]] On Behalf Of Barry Margolin
> Sent: Sunday, January 30, 2011 4:14 PM
> To: [email protected]
> Subject: Re: what's a valid domain name?
> 
> In article <[email protected]>,
>  Vytautas Grigaliunas <[email protected]> wrote:
> 
> > What is the status of "dotted" hostnames - i.e. a period in the
> hostname
> > portion of a domain name ?
> >
> > At one point they were allowed, I believe ? What is the latest
> official RFC ?
> 
> I don't think they've every been allowed.  Why would you need to do
> this, instead of just using another level of subdomain?  To get a
> literal period into a label, you need to escape it, e.g.
> foo\.bar.company.com instead of foo.bar.company.com.  The latter is
> allowed, always has been, and is quite common.
> 
> --
> Barry Margolin, [email protected]
> Arlington, MA
> *** PLEASE don't copy me on replies, I'll read them in the group ***
> _______________________________________________
> bind-users mailing list
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> https://lists.isc.org/mailman/listinfo/bind-users

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