[TriLUG] dhclient woes

[Darryl L. Pierce]

On Sun, Jul 15, 2012 at 11:15:43AM -0400, Bill Farrow wrote:
> Hi TriLuggers,
> At work I run several ubuntu boxes (10.04) out in the lab that are
> used to test and manage our prototype embedded boards.  They happily
> dhcp their address and allow me to ssh into them from my desk or from
> home.  Normally everything works great.
> 
> On Friday night I was doing some maintenance to the company
> file-server and dhcp-server.  The dhcp server was offline for about 60
> minutes, and once it was back up I confirmed that my desktop could
> renew it's lease.  On Sunday I tried to remotely access my lap boxes
> and could not reach any of them...
> 
> Once I arrived on site, I found that the lab boxes had not renewed
> their dhcp leases since Friday night.  Restarting their network fixed
> the problem.  My understanding of dhclient is that it should retry
> every 5 minutes if it fails to obtain a lease.  I would like to avoid
> this problem in the future.  Google searching did not turn up anything
> of interest on this problem.  Which is why I ask you guys.
> 
> /etc/network/interfaces
>   auto lo
>   iface lo inet loopback
>   auto eth0
>   iface eth0 inet dhcp

Can you post the DHCP configuration for those systems? Specifically,
does it have PERSISTENT_DHCLIENT enabled?

-- 
Darryl L. Pierce <mcpierce at gmail.com>
http://mcpierce.multiply.com/
"What do you care what people think, Mr. Feynman?"
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