Question about the ADDITIONAL SECTION

[Mark Andrews]

> Barry Margolin wrote:
> > In article <f5c1g3$2839$1 at sf1.isc.org>,
> > "Clenna Lumina" <savagebeaste at yahoo.com> wrote:
> >
> >> I have a question. I am using ZoneEdit.com to slave some zones I
> >> have, and I noticed their servers never return the ADDITIONAL
> >> SECTION which should contain the A records for the NS servers that
> >> were returned in the AUTHORITY SECTION.
> >>
> >> Naturally, my local master Bind server return that section, like a
> >> good DNS server.
> >>
> >> I'm assuming they are using "minimal-responses: yes" in their
> >> named.conf.
> >
> > Or maybe "fetch-glue no", if the nameservers are in domains that
> > ZoneEdit.com doesn't manage.
> >
> >> So my question is, isn't it going against how DNS is supposed to
> >> work, in regards to authoritative lookups, to NOT return A records
> >> for the NS's listed in the AUTHORITY section?
> >
> > If it's the fetch-glue option, this simply shifts the responsibility
> > to the client nameserver to look them up.
> >
> >> To my knowledge, "minimal-responses: yes" should only be used for
> >> caching (resolving) servers only, right?
> >>
> >> Thanks for any help clearing this up.
> 
> I don't think it's fetch-glue, or if it is I don't think they should be 
> usign that either. In my situation, I use tw oof their servers for 
> slaving a couple domains, and my master server from which they get their 
> info is not listed with na NS record; the two ZoneEdit slaves are the 
> ones listed in my domains's parent zones. The reason for this setup is 
> so the network the master server on doesn't get so much traffic from all 
> the queries. The only traffic is from updates and checks of the master 
> zones by the slaves.
> 
> It works well, but I really think that ZoneEdit's slave servers shoudl 
> be returning the ADDITIONAL SECTION with the A records of the two NS's, 
> should it not? Isn't it against the specifications/RFCs to not do so if 
> you'ree authoritative for the zone being queried???
> 
> 
> -- 
> CL 

	The only time the additional data is required is when you
	are returning a referral and even then only when you have it.

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