Hello.  I'm running tcpdump on a 486 (NetBSD 1.2).  The network interface is an SMC Ultracheap (ed0).  Every few hours, the net connection dies, and I get tons of messages on the console of the form:

<Date> <Time> <nodename> /netbsd: ed0: device timeout

The machine was fine (stayed up for weeks with no problems) until (a) I started running tcpdump and (b) network traffic increased sharply.

Any idea what's up?  More details that I should provide?  Feel free to flame ruthlessly if I am overlooking the obvious.  It doesn't appear to be a bad card-- I've tried a few of them (all SMC), all with the same result.

Thanks,

Kirk Corey

kirk-corey@uiowa.edu