From owner-freebsd-net@FreeBSD.ORG  Wed Sep 22 18:49:31 2010
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Date: Wed, 22 Sep 2010 14:32:52 -0400
From: Carlos Kamtha <kamtha@ak-labs.net>
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Subject: Server network interface problem?
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Hello, 

I recently had a problem with an NFS server running:

FreeBSD 8.0-RELEASE #0

It suddenly was not reachable from the network. A closer look on the console revealed that the
interface was still marked as "active" and the server was able to ping itself, but not the gateway. 

While in this state, I was not able to ssh to the client machines that use mount points on the
NFS server in question. 

To solve this problem, i plugged out the network cable and plugged it back in.  This server has been
online for almost a year and never experienced this problem till now. 


I'm wondering 2 things. 

a.) Could this be an issue with the driver on this release for em0? 


b.) Why was I not able to ssh to the client servers while the NFS server was down?


Any clues would be greatly appreciated. 


Thanks!

Carlos.