"Unrelated Additional Info" from Windows 2000 Active Directory servers

Adam Hooper adamhooper at videotron.ca
Thu Oct 4 16:16:42 UTC 2001


Kevin Darcy wrote:

> Adam Hooper wrote:
>
> > > > zone "1.168.192.in-addr.arpa" in {
> > > >         type forward;
> > > >         check-names ignore;
> > > >         forward first;
> > > >         forwarders { 192.168.1.202; };
> > > >         file "rev.1.168.192";
> > > > };
> > >
> > > "Type forward" zones don't have a "file". What would you even
> > > put into that file? You're forwarding all of the queries you
> > > get for the domain, so there is no reason to have a file.

Well, I don't know *what* I was smoking when I came up with that. Of course
just getting rid of the "file" line worked fine. I should of at least tried
it again when you said to -- sorry 'bout that! :)

So now I feel like my named.conf is cleaner, but there's still that original
problem with "unrelated additional info". I've got some extra debug info,
which I hope somebody will be able to analyse and tell me what on earth is
going on. :)

To recap the situation (and I'll just use real domain names now, not
"domainA" and "domainB"):

- carbon.densi.com (192.168.1.201): primary BIND server for densi.com on
Linux, also "preferred DNS server" for internal computers.
- resin.densiseldrum.com (192.168.1.202): Active Directory server for
internal machines. carbon forwards requests to densiseldrum.com to resin. It
also does all reverse DNS lookups on 192.168.1.
- internal computers are all members of the densiseldrum.com Active
Directory domain.
- carbon.densi.com's logs always show a "unrelated additional info
'resin.densiseldrum.com' type A from [192.168.1.202].53".

I ran named at debug level 9 for a while and isolated a section of the log
that illustrates the problem:

Oct  4 11:59:40 carbon named[19493]: datagram from [192.168.1.21].1533, fd
24, len 39
Oct  4 11:59:40 carbon named[19493]: req: nlookup(pc21.densiseldrum.com) id
283 type=6 class=1
Oct  4 11:59:40 carbon named[19493]: req: found 'pc21.densiseldrum.com' as
'densiseldrum.com' (cname=0)
Oct  4 11:59:40 carbon named[19493]: findns: np 0x23b77c 'densiseldrum'
Oct  4 11:59:40 carbon named[19493]: findns: np 0x22c190 'com'
Oct  4 11:59:40 carbon named[19493]: findns: np 0x2284b8 ''
Oct  4 11:59:40 carbon named[19493]: findns: 13 NS's added for ''
Oct  4 11:59:40 carbon named[19493]: ns_forw()
Oct  4 11:59:40 carbon named[19493]: qnew(0x237008)
Oct  4 11:59:40 carbon named[19493]: find_zone(pc21.densiseldrum.com, 1)
Oct  4 11:59:40 carbon named[19493]: find_zone: unknown zone
Oct  4 11:59:40 carbon named[19493]: find_zone(densiseldrum.com, 1)
Oct  4 11:59:40 carbon named[19493]: find_zone: existing zone 4
Oct  4 11:59:40 carbon named[19493]: retrytime: nstime0ms t4 nretry0 u4 : v4
Oct  4 11:59:40 carbon named[19493]: schedretry(0x237008, 4 sec)
Oct  4 11:59:40 carbon named[19493]: forw: forw -> [192.168.1.202].53 ds=5
nsid=44013 id=283 34ms retry 4sec
Oct  4 11:59:40 carbon named[19493]: free_nsp: J.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: K.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: L.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: M.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: I.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: E.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: D.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: A.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: H.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: C.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: G.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: F.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: free_nsp: B.ROOT-SERVERS.NET rcnt 1
Oct  4 11:59:40 carbon named[19493]: datagram from [192.168.1.202].53, fd 5,
len 103
Oct  4 11:59:40 carbon named[19493]: qfindid(44013) -> 0x237008
Oct  4 11:59:40 carbon named[19493]: Response (USER NORMAL -) nsid=44013
id=283
Oct  4 11:59:40 carbon named[19493]: stime 1002211180/323622  now
1002211180/359071 rtt 35
Oct  4 11:59:40 carbon named[19493]: NS #0 addr [192.168.1.202].53 used, rtt
34
Oct  4 11:59:40 carbon named[19493]: rrextract: dname densiseldrum.com type
6 class 1 ttl 3600
Oct  4 11:59:40 carbon named[19493]: rrextract: dname resin.densiseldrum.com
type 1 class 1 ttl 3600
Oct  4 11:59:40 carbon named[19493]: unrelated additional info
'resin.densiseldrum.com' type A from [192.168.1.202].53

I believe the Windows 2000 server is the culprit, but I don't know what
option I should change to make this go away....

Any ideas?

Thanks,

Adam Hooper
adamhooper at videotron.ca



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