two network cards on a server

[Faheem Mitha <faheem@email.unc.edu>]

Hi everyone,

I've got a server on which there are two network cards. One of the network 
cards has been configured, and has been running satisfactorily for a 
while. I recently plugged in the other network card and started using it 
for a different IP address. However, I've been having persistent problems 
with that interface. Namely, some of the time I can't connect to the 
interface, which seems to go up and down unpredictably, and floods the 
system logs with DHCP requests. Clearly something is badly wrong here, and 
I am hoping this is something simple that can be fixed easily.

This typically looks like

Apr 18 15:16:42 florence kernel: e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
Apr 18 15:16:43 florence dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 15:16:43 florence dhclient: receive_packet failed on eth0: Network is down
Apr 18 15:16:45 florence dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Apr 18 15:16:46 florence dhclient: DHCPOFFER from 152.3.172.1
Apr 18 15:16:46 florence dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67
Apr 18 15:16:46 florence dhclient: DHCPACK from 152.3.172.1
Apr 18 15:16:46 florence dhclient: bound to 152.3.172.111 -- renewal in 43200 seconds.
Apr 18 15:16:48 florence dhclient: DHCPREQUEST on eth1 to 152.3.250.61 port 67
Apr 18 15:16:48 florence dhclient: DHCPACK from 152.3.250.61
Apr 18 15:16:48 florence dhclient: bound to 152.3.172.60 -- renewal in 43200 seconds.
Apr 18 15:16:53 florence kernel: eth0: no IPv6 routers present

If any has any ideas about this, please let me know. Please copy me at 
faheem@email.unc.edu. Thanks.

                                                                Faheem.