[Xen-users] domU networking problem

[Miles Fidelman <mfidelman@xxxxxxxxxxxxxxxx>]

Hi Folks,

I have a DomU that was working just fine, but now it seems unable to 
obtain a network address.
On boot, I'm getting a series of DHCPDISCOVER messages in the log, 
followed by "No DHCPOFFERS received."
But... the router/dhcpserver seems to be working (other machines on the 
same LAN are picking up addresses, and just for good measure I rebooted 
the router). <NEW DOMU>
The one change I made to the DomU was installing xdm, but after doing so 
networking continued to work, and I was able to do what I intended (ssh 
-X <domU's IP> from the Dom0, then run apps in the Dom0's window 
manager).  Networking was still working.
But now, after a reboot, the DomU no longer seems to be able to reach 
the DHCP server.
Any suggestions on what might be going on, or how to diagnose things?  
I'm not completely clear on all the various steps a DHCPDISCOVER message 
goes through - as it flows through all the virtual networking wiring - 
particularly before an IP address has been assigned and everything is at 
the virtual ethernet level.
Thanks,

Miles Fidelman

--
In theory, there is no difference between theory and practice.
In<fnord>  practice, there is.   .... Yogi Berra



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