DNS issues

Jeff LaCoursiere jeff at jeff.net
Wed Mar 9 19:26:57 GMT 2005


Fixed... rebooted the internal firewall and all started working.  Musthave
mangled the responses in some odd way.  Computers suck.

j

On Wed, 9 Mar 2005, Jeff LaCoursiere wrote:

>
> I am fairly stumped and hope someone can shed some light...
>
> FreeBSD 5.3-RELEASE on a laptop.  Plugged into a DLINK home firewall,
> which is plugged into another DLINK home firewall, which is connected to
> an ISP.  I get no DNS responses with nslookup or dig, but when I sniff the
> traffic I see the responses arriving.  There are no ipfw lists or other
> filters involved.  Lastly, when plugged into the outer DLINK everything
> works fine. Relevant info:
>
> jefflap% uname -a
> FreeBSD jefflap.jeff.net 5.3-RELEASE FreeBSD 5.3-RELEASE #0: Fri Nov  5
> 04:19:18 UTC 2004
> root at harlow.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
> jefflap% nslookup www.jeff.net
> ;; connection timed out; no servers could be reached
>
> jefflap%
> jefflap% s tcpdump -nli sis0 host 66.185.33.2
> Password:
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on sis0, link-type EN10MB (Ethernet), capture size 96 bytes
> 13:58:18.672308 IP 10.0.13.11.56249 > 66.185.33.2.53:  41563+ A?
> www.jeff.net. (30)
> 13:58:18.686648 IP 66.185.33.2.53 > 10.0.13.11.56249:  41563 1/3/3 A
> 216.185.111.244 (147)
> 13:58:24.692050 IP 10.0.13.11.56249 > 66.185.33.2.53:  41563+ A?
> www.jeff.net. (30)
> 13:58:24.701612 IP 66.185.33.2.53 > 10.0.13.11.56249:  41563 1/3/3 A
> 216.185.111.244 (147)
> 13:58:30.712139 IP 10.0.13.11.56249 > 66.185.33.2.53:  41563+ A?
> www.jeff.net. (30)
> 13:58:30.720652 IP 66.185.33.2.53 > 10.0.13.11.56249:  41563 1/3/3 A
> 216.185.111.244 (147)
>
> Any ideas?
>
> Cheers,
>
> j
>
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