named.conf: query-source address

[Mark Andrews]

> query-source is only ever used by recursive or stub resolvers --
> instances of named that will go out and make queries on the net on your=20
> behalf.  Authoritative servers really don't need it.

	Actually authoritative servers make queries to work out
	where to send notify messages.  While sending a notify to
	the wrong place is not that bad.  It is good practice to
	see that authoritative servers are also fixed now rather
	than later.  Servers have a habit of changing roles and
	when that happens not everyone will looks in options to see
	if query source is correct.

	Also at some point I'd like to be able to get rid of masters
	clauses or at least go from IP addresses to hostnames.  The
	slave / stub zones would then have to go out and discover
	the ip address on the fly.
 
	Mark

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org