Weird network problem

[Aaron Cheek <aaron_cheek@yahoo.com>]

Hi, folks.

I have an OpenBSD 3.0 box acting as a firewall with
several nics. One of them, a DE205 (EISA), is giving
me a hard time.

This interface is directly connected to the hub of a
3com 812 ADSL router, and starts working ok, but after
about 10 min. 15 secs, the conectivity stops.

If then I remove the router entry from the arp table
(arp -d) it starts working ok... for another 10 min.
15 secs!!! (I have a script to do so as a workaround).

The rest of the interfaces in the box do not
experience such behavior.

Any ideas?
Aaron
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