Date: Sun, 6 Jan 2002 22:39:31 -0800 From: "Crist J. Clark" <cristjc@earthlink.net> To: Rachel Leising <rleising@sbcglobal.net> Cc: freebsd-net@FreeBSD.ORG Subject: Re: name resolution problems and "full socket buffers" Message-ID: <20020106223931.E2029@gohan.cjclark.org> In-Reply-To: <a05100300b85ea4d919a2@[10.0.1.26]>; from rleising@sbcglobal.net on Sun, Jan 06, 2002 at 05:22:00PM -0800 References: <a05100300b85ea4d919a2@[10.0.1.26]>
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On Sun, Jan 06, 2002 at 05:22:00PM -0800, Rachel Leising wrote:
>
> --
> I can't seem to get name resolution working correctly.
>
> According to sniffer output, the dns query goes out fine and the
> response comes back just fine. However, my machine then replies to
> the dns server with an ICMP "port unreachable message"... regardless
> of the ephemeral port used by my machine as the source port for the
> dns query.
Could you post the actual tcpdump(1) output,
# tcpdump -vvvn 'udp && port 53'
Just in case you are missing something.
> nestat -s also shows the following udp counters incrementing:
>
> "x dropped due to no socket"
This is what I would expect for what you describe...
> "y dropped due to full socket buffers"
Hmmmm...
Could we double-check the firewall issue,
$ sysctl net.inet.ip.fw.enable net.inet.ipf.fr_running
And see the full output of,
$ netstat -s -p udp
$ netstat -an -p udp
$ host testhost # your DNS test here
$ netstat -s -p udp
$ netstat -an -p udp
--
"It's always funny until someone gets hurt. Then it's hilarious."
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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