[Xen-devel] Questions/Help with network/IP setup

[Roland Paterson-Jones <roland@xxxxxxxxxxxx>]

Hi again

I'd ideally like to let my vm's/non-0 domains use DHCP (so I can reuse 
root-fs images etc), but I would also ideally like to specify the IP 
address when launching (xm create'ing) the domain.
Is there an easy way to do this? I see that I can specify the MAC 
address in the set-up script, so I could presumably fiddle the 'normal' 
DHCP server to serve up the appropriate IP address according to the MAC 
address. However, I'd prefer the Xen/domain-0 to intercept the DHCP 
request or something, so that I can keep things local.
I'm also a little confused as to the exact semantics of the network 
settings in the xm create config files. I see there are fields to 
enable/disable (some level of) dhcp, and supply a gateway, net mask and 
host name, but I haven't been able to nail down exactly what these do 
and how they interact with the normal DHCP process within the vm.
Thanks again for any help
Roland




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