Can't look up local names

[Mark.Andrews at nominum.com]

> I was convinced there was something.
> 
> Looked it up in the good old DNS & Bind book, the very first one
> 
> --<page 106>--
> If you use multiple nameserver directives, don't use the loopback address!
> There's a bug in BIND 4.8.3 that will cause problems if the local name
> server is down. The resolver will send query packets to the remote name
> servers with a source address of 127.0.0.1. When the remote name server
> tries to reply, it'll end up sending the reply packet to itself.
> --------------
> 
> Assuming this is fixed since then, lol

	This was fixed years ago in the BIND distribution.
	From BIND 4 CHANGES.

	BIND 4.9.3-prealpha

26. systems whose connect() calls fail if a socket is already connect()'d
    will now have their sockets closed and recreated in res_send() (piete
    brooks; mark andrews; vixie).

	Mark

> 
> Kind Regards,
> 
> Gody Keijzer
> 
> -----Original Message-----
> From: Mark.Andrews at nominum.com [mailto:Mark.Andrews at nominum.com]
> Sent: Friday, March 16, 2001 12:03 AM
> To: HAG.Keijzer at mindef.nl
> Cc: bind-users at isc.org
> Subject: Can't look up local names
> 
> 
> 
> 	Whether you can use 127.0.0.1 as a nameserver and fall back to
> 	other nameservers depends upon the age of your resolver and
> 	whether your OS supports unconnecting connected UDP sockets.
> 
> 	Mark
> 
> > 
> > Correct me if I am wrong, but wasn't there a problem with using localhost
> in
> > your resolv.conf?
> > 
> > I remember that under older versions of bind it was advised not to use the
> > localhost as nameserver, especially in combination with multiple
> nameserver
> > directives?
> > 
> > Kind Regards,
> > Gody Keijzer.
> > 
> > -----Original Message-----
> > From: Bob Vance [mailto:bobvance at alumni.caltech.edu]
> > Sent: Thursday, March 15, 2001 3:12 PM
> > To: bind-users at isc.org
> > Subject: RE: Can't look up local names
> > 
> > 
> > 
> > Looks like a resolver issue.
> > In "/etc/resolv.conf", you need :
> > 
> > search masspostroad.net
> > nameserver 127.0.0.1
> > 
> > nslookup (and clients, like 'telnet', that are linked with the resolver
> > libraries) will append the domain names in the "search" list, one after
> > the other, to an input name with no dots until a lookup is satisfied or
> > the list is exhausted.  The first domain is considered to be the domain
> > of the local host.
> > So
> >    xww.yahoo.com  ---> xww.yahoo.com
> > but
> >    warren   --> warren.masspostroad.net
> > 
> > If "/etc/resolv.conf" is correct and you are using the vendor
> > 'nslookup', then it may be that the vendor resolver libraries and their
> > 'nslookup' support lookup facility switching via "/etc/nsswitch.conf".
> > E.g., this is the case for HP-UX -- dunno 'bout FreeBSD.
> > 
> > 
> > -------------------------------------------------
> > Tks        | <mailto:BVance at sbm.com>
> > BV         | <mailto:BobVance at alumni.caltech.edu>
> > Sr. Technical Consultant,  SBM, A Gates/Arrow Co.
> > Vox 770-623-3430           11455 Lakefield Dr.
> > Fax 770-623-3429           Duluth, GA 30097-1511
> > =================================================
> > 
> > 
> > 
> > 
> > 
> > -----Original Message-----
> > From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On
> > Behalf Of Sir
> > Sent: Thursday, March 15, 2001 12:17 AM
> > To: bind-users at isc.org
> > Subject: Can't look up local names
> > 
> > 
> > 
> > I am running FreeBSD4.1 stable with bind 9.1.0. I have configured
> > named.conf and all of the zone files associated with it. My problem was
> > a basic one but pointed out a knowledge gap. At first, I couldn't look
> > up names in the local domain i.e.;
> > 
> > nslookup warren
> > 
> > server : localhost
> > address : 127.0.0.1
> > 
> > **** localhost can't find warren : Non-existant host/domain
> > 
> > 
> > my "hostname" was set to "warren". When I set it to
> > warren.masspostroad.net the local lookups work fine. "domainname" still
> > returns "". I've read all I could, even bought "the" O'Reiley book and I
> > guess they assume you already know some things that I don't.  Does
> > anyone in the know have the time to front me some background into what's
> > going on here. I thought the zone file would suffice to explain to the
> > name server who it is and it's SOA?
> > 
> > 
> > 
> --
> Mark Andrews, Nominum Inc.
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com
--
Mark Andrews, Nominum Inc.
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com