> On Thu, 18 Dec 2003 [EMAIL PROTECTED] wrote:
> > The only part of the DNS that really cares about additional
> > data are iterative resolvers.
>
> .. which is a pretty big part of DNS..
>
> > They can't work unless they
> > can get the glue they need. Every other client MUST be
> > able to cope with missing additional data.
> >
> > Iterative resolvers only care when they can't get the glue
> > address records they require. In most cases a iterative
> > resolver can re-query for missing glue. The only time they
> > can't do this at the momemnt is when you have a cross
> > delegation.
>
> The main point I was trying to make is that when you get only
> *partial* additional data (e.g. only A records but not AAAA), how do
> you know that it's *partial*, not the whole truth (i.e., that you
> should go asking for AAAA records because you know you want them as
> well as the A records you got already).
You don't know if there are dropped records however this
really isn't a problem. You use what you get then look
for missing glue when you exhaust the supplied glue.
> --
> Pekka Savola "You each name yourselves king, yet the
> Netcore Oy kingdom bleeds."
> Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
>
> .
> dnsop resources:_____________________________________________________
> web user interface: http://darkwing.uoregon.edu/~llynch/dnsop.html
> mhonarc archive: http://darkwing.uoregon.edu/~llynch/dnsop/index.html
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: [EMAIL PROTECTED]
.
dnsop resources:_____________________________________________________
web user interface: http://darkwing.uoregon.edu/~llynch/dnsop.html
mhonarc archive: http://darkwing.uoregon.edu/~llynch/dnsop/index.html
