watchdog timeout problem with freebsd 6.2-stable and v6.4.1 if_em driver

Andrew Snow andrew at
Mon Jun 25 06:10:29 UTC 2007

Jack Vogel wrote:
>> After medium-heavy traffic, the NIC locks up completely and no traffic
>> passes for a long time, perhaps longer than half an hour.
>> Then, it recovers and prints this to syslog:
>> em0: watchdog timeout -- resetting
>> em0: link state changed to DOWN
>> em0: link state changed to UP
> If you search thru the email archives you will find that
> I have posted a DOS patcher that fixes the problem.
> Search on 82573, if you have a problem let me know.

Thanks Jack, the patch fixed the problem for me.

I found it quite hard to find the patch to download, so I took the 
liberty of posting an article about it for posterity, including 
instructions and download link, I hope thats OK.

- Andrew

More information about the freebsd-net mailing list