client 1.2.3.4#56789: update 'sampledomain.com/IN' denied

[Mark_Andrews at isc.org]

> 
> On Mon, 8 Jul 2002, Simon Waters wrote:
> 
> >
> > Doug Barton wrote:
> > >
> > > On Mon, 1 Jul 2002, Simon Waters wrote:
> > >
> > > >
> > > > Johan Kuuse wrote:
> > > > >
> > > > > I still have some doubts.
> > > > > If I change the MNAME field to "localhost" for zone "sampledomain.com
> ",
> > > > > should the host "localhost.sampledomain.com" be used as 127.0.0.1?
> > > >
> > > > Yes, all domains (that clients belong to) should have a
> > > > localhost (that is in an RFC somewhere), pointing to 127.0.0.1.
> > >
> > > Reference please? http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc1537.html
> > > suggests something similar to what you're saying, but it actually wants
> > > you to be authoritative for "localhost." which is something quite
> > > different. I added the following to my resolvers configs a while back:
> >
> > RFC1537
> >
> > "Note that all domains that contain hosts should have a
> > "localhost" A record in them."
> 
> Good point... I glossed over that.
> 
> > RFC1537 doesn't say you should be a primary for "localhost."
> 
> It says:
> 
> - "localhost" itself is used and expected to work on some systems.
> 
> My feeling is, better safe than sorry. I also think that if the resolver
> returns an answer for localhost. when a user types it in, it saves having
> to search the other domains in the search list for localhost.domain.

	If the user types "localhost." the search list won't be tried.
	If the user types "localhost" the seach list should be tried
	first.  If it isn't the resolver needs to be replaced.  See
	RFC 1535.
	
	That all being said having a "localhost" zone does not hurt and
	will intercept some wayward queries.


> Doug
> -- 
>    "We have known freedom's price. We have shown freedom's power.
>       And in this great conflict, ...  we will see freedom's victory."
> 	- George W. Bush, President of the United States
>           State of the Union, January 28, 2002
> 
>          Do YOU Yahoo!?
> 
> 
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org