strange eth behavior

[vu Pham]

Just a strange experience that I would like to share to everybody.

This server has two Broadcom nics. Both are working fine until last 
night when the server log reported a CPU Check. It rebooted normally. 
One nic works properly. The other one has this strange behavior and I 
did turn off all the firewalls on this server.

- it can ping to any other servers ( in the same LAN or not )
- nobody on the same LAN can ping it. tcpdump shows it does issue the 
icmp replies, but the other servers do not see them.
- on its LAN, it can ssh only to the router , and cannot ssh to any 
other servers. tcpdump show the packets sync, syn-ack and then reset 
immediately after the syn-ack.
- it can ssh to others servers behind the routers

This morning I added another nic into the server, migrated all the ifcfg 
settings to the new one and all work fine now.

Called Dell and they are going to send me another motherboard.

Vu