Date: Mon, 05 Mar 2001 21:35:58 +0100 From: "Dimitry Andric" <dim@xs4all.nl> To: "FreeBSD Questions" <questions@FreeBSD.ORG> Cc: "Koster, K.J." <K.J.Koster@kpn.com> Subject: Re: Name server config and nslookup Message-ID: <200103052135580225.02AF6057@smtp.xs4all.nl> In-Reply-To: <59063B5B4D98D311BC0D0001FA7E4522026D7C72@l04.research.kpn.com> References: <59063B5B4D98D311BC0D0001FA7E4522026D7C72@l04.research.kpn.com>
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On 2001-03-05 at 18:23 Koster, K.J. wrote:
>% nslookup
>*** Can't find server name for address 10.128.1.7: Non-existent
>host/domain *** Can't find server name for address 10.128.1.39:
>Non-existent
>host/domain
>*** Default servers are not available
This is because nslookup tries to look up the hostname(s) of your DNS
servers. However, it doesn't do this via gethostbyaddr(3), but it
forms its own query, looking up a PTR record for
"7.1.128.10.in-addr.arpa" and "39.1.128.10.in-addr.arpa". Maybe the
MXStream DNS servers refuse such queries?
Try running "nslookup -d2" for lots of debugging output, which may
clear up what goes wrong exactly. Here is some sample output for a
"successful" run of nslookup (on one of the xs4all shell boxes):
dim@xs3:~$ nslookup -d2
;; res_mkquery(0, 104.104.109.194.in-addr.arpa, 1, 12)
- ------------
SendRequest(), len 46
HEADER:
opcode =3D QUERY, id =3D 57153, rcode =3D NOERROR
header flags: query, want recursion
questions =3D 1, answers =3D 0, authority records =3D 0,
additional =3D 0
QUESTIONS:
104.104.109.194.in-addr.arpa, type =3D PTR, class =3D IN
- ------------
- ------------
Got answer (144 bytes):
HEADER:
opcode =3D QUERY, id =3D 57153, rcode =3D NOERROR
header flags: response, want recursion, recursion avail.
questions =3D 1, answers =3D 1, authority records =3D 2,
additional =3D 2
QUESTIONS:
104.104.109.194.in-addr.arpa, type =3D PTR, class =3D IN
ANSWERS:
-> 104.104.109.194.in-addr.arpa
type =3D PTR, class =3D IN, dlen =3D 19
name =3D ns.s340.xs4all.nl
ttl =3D 67577 (18 hours 46 mins 17 secs)
AUTHORITY RECORDS:
-> 104.109.194.in-addr.arpa
type =3D NS, class =3D IN, dlen =3D 5
nameserver =3D ns.xs4all.nl
ttl =3D 67577 (18 hours 46 mins 17 secs)
-> 104.109.194.in-addr.arpa
type =3D NS, class =3D IN, dlen =3D 6
nameserver =3D ns2.xs4all.nl
ttl =3D 67577 (18 hours 46 mins 17 secs)
ADDITIONAL RECORDS:
-> ns.xs4all.nl
type =3D A, class =3D IN, dlen =3D 4
internet address =3D 194.109.6.66
ttl =3D 86400 (1 day)
-> ns2.xs4all.nl
type =3D A, class =3D IN, dlen =3D 4
internet address =3D 194.109.9.99
ttl =3D 86400 (1 day)
- ------------
Default Server: ns.s340.xs4all.nl
Address: 194.109.104.104
dim@xs3~$
I can't test this myself, since I'm still anxiously awaiting my ADSL
kit, but haven't received anything yet. :( So please try this, and
let us know where it goes wrong.
Cheers,
- --
Dimitry Andric <dim@xs4all.nl>
PGP key: http://www.xs4all.nl/~dim/dim.asc
KeyID: 4096/1024-0x2E2096A3
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