Hi,

Two of my OBSD servers had exhibited strange behaviour in the last week.

The first, on Sunday, was a 2.7 server running Squid 2.2-stable5 and tinydns
from djbdns 1.02. It started displaying '/bsd: arpresolve: can't allocate
llinfo' and no connections could be made to it. I rebooted and it's been
fine since.

Then this morning another server running OBSD 2.6, with qmail 1.03, vpopmail
4.9.6-1, httpd and dnscachex from djbdns 1.04 also started displaying the
error and stop accepting connections. I rebooted and it's been fine.

I have searched the misc archive and most indicators seem to be that it's a
routing or netmask problem. Thing is, these machines have been in service
for over 6 months and 1 year respectively and this is the first time I have
seen this problem - no changes to any routing/tcp-ip/netmask table recently,
except that I changed from named to dnscache on the second machine at the
end of Jan and installed tinydns on the first in November. I have another
2.7 machine running tinydns and a 2.8 running dnscache and those have not
exhibited these problems (yet).

What should I look for to try to diagnose this problem (one of the messages
in the archive hinted a arp poisoning!?!)? I did not try to check anything
before rebooting, but I would appreciate some pointers about where to look
or what to do if this happens again.

Thanks,

Abdul

--
East Coast Access (http://www.eastcoast.co.za)
Tel: +27-31-267-0169
Fax: +27-31-267-0168

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