One thought,

There are numerous dhcp clients out there for linux. Some are tuned for
different scenarios. I ran into this problem when dealing with windows based
dhcp servers a few years ago, and simply changed which dhcp client I was
using. This seemed to rectify the situation.

You might try delving into the dhclient config file to make sure there
aren't any compatibility options checked/unchecked that ought or ought not
to be there.

Michael Joy
HEP - University of Mississippi
[log in to unmask]

-----Original Message-----
From: [log in to unmask]
[mailto:[log in to unmask]] On Behalf Of Ken Teh
Sent: Friday, December 17, 2004 9:28 AM
To: [log in to unmask]
Subject: off-topic: dhcp, dhclient

I had a failure of my dhcp server over the weekend.  After restarting dhcp
services, I find that none of my Linux machines could recover their
IPs without restarting their network service even after the lease time
has elapsed.  I use "static" dhcp so a machine's IP/DNS is really fixed.
The dhcp service has been running now for a week and I'm still running into
the stand-alone Linux box that has not recovered its IP.  The box is
running.  dhclient is running.  ifconfig shows that the eth0 device is
initialized; it just lacks its IP.  All the Windows boxes survived the dhcp
outage.

It appears that dhclient does not work properly on Linux.  I assumed that
dhclient would relinquish the IP after the lease time, then keep trying to
request a renewal.  But, apparently, it doesn't.  It appears to have given
up

Ideas, anyone?

Ken