[2806] in linux-net channel archive
Re: are these guys misconfigured?
daemon@ATHENA.MIT.EDU (Miguel Bettencourt de Freitas Dias)
Mon May 6 00:05:53 1996
To: nelson@crynwr.com
cc: linux-net@vger.rutgers.edu, mst@ns2.helenet.com
In-reply-to: Your message of "04 May 1996 11:52:15 GMT."
<19960504115215.9333.qmail@ns.crynwr.com>
Reply-To: mbd@telepac.pt
No-Return-Receipt-To: mbd@telepac.pt
Date: Sun, 05 May 1996 13:59:37 +0100
From: Miguel Bettencourt de Freitas Dias <mbd@telepac.pt>
> I keep getting a Response from unexpected source ([206.127.72.129].53)
> error in my named log. That address has no reverse mapping, but when
> I telnet to it, it claims to be ns2.helenet.com, whose forward mapping
> is to 204.182.241.5. The host seems to be a linux box acting as a
> router AND nameserver. At least, the host is multihomed and the route
> to both addresses goes over the same path, and the finger information
> on both addresses is the same. Right at this moment, when I try to
> force the error by doing a ``dig soa helenet.com @ns2.helenet.com'',
> it times out even though the host is perfectly reachable by finger,
> telnet, etc.
>
> So, is Linux networking choosing a different IP address for the return
> packet because it's sending it out the interface that faces the rest
> of the net?
>
> -russ <nelson@crynwr.com> http://www.crynwr.com/~nelson
> Crynwr Software | Crynwr Software sells packet driver support | PGP ok
> 11 Grant St. | +1 315 268 1925 voice | It's no mistake to err on
> Potsdam, NY 13676 | +1 315 268 9201 FAX | the side of freedom.
>
I did this ...
dig soa helenet.com @ns2.helenet.com
And got this ...
; <<>> DiG 2.1 <<>> soa helenet.com @ns2.helenet.com
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10
;; flags: qr aa rd ra; Ques: 1, Ans: 1, Auth: 2, Addit: 3
;; QUESTIONS:
;; helenet.com, type = SOA, class = IN
;; ANSWERS:
helenet.com. 86400 SOA ns.helenet.com. admin.helenet.com. (
96021402 ; serial
10800 ; refresh (3 hours)
3600 ; retry (1 hour)
604800 ; expire (7 days)
86400 ) ; minimum (1 day)
;; AUTHORITY RECORDS:
helenet.com. 86400 NS ns.helenet.com.
helenet.com. 86400 NS ns2.helenet.com.
;; ADDITIONAL RECORDS:
ns.helenet.com. 86400 A 204.182.241.66
ns.helenet.com. 86400 A 204.182.241.65
ns2.helenet.com. 86400 A 204.182.241.5
;; Total query time: 2540 msec
;; FROM: Don-Juan to SERVER: ns2.helenet.com 204.182.241.5
;; WHEN: Sun May 5 13:57:44 1996
;; MSG SIZE sent: 29 rcvd: 154
--
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