freebsd stable - May 2010 - network probs rxcsum

Hi,

I have two machines running FreeBSD amd64 8.0-Stable with custom kernels.
My newer box has had troubles with ssh from day one.
I hoped a kernel upgrade would help, but it didn't.
When I'd ssh into the box ssh would exit with errors:
Bad packet length xxxxxx
Disconnecting: Packet corrupt.

after issueing: "ifconfig em0 -rxcons" everything was stable again.
First I figured it'd be a driver issue. However, I use the same NIC in
my other box!
What could be causing this problem?

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On Wed, May 19, 2010 at 12:34:17PM +0200, Mark Stapper
wrote:
> I have two machines running FreeBSD amd64 8.0-Stable with custom kernels.
> My newer box has had troubles with ssh from day one.
> I hoped a kernel upgrade would help, but it didn't.
> When I'd ssh into the box ssh would exit with errors:
> Bad packet length xxxxxx
> Disconnecting: Packet corrupt.
> 
> after issueing: "ifconfig em0 -rxcons" everything was stable
again.
> First I figured it'd be a driver issue. However, I use the same NIC in
> my other box!
> What could be causing this problem?
I think you mean "-rxcsum", not "-rxcons".

Could you please provide output from the following commands?  Jack Vogel
will probably respond later about this, but said output would help him.

- uname -a
- dmesg | grep em0
- pciconf -lvc

Thanks.

-- 
| Jeremy Chadwick                                   jdc@parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |