Re: [Xen-users] Providing dhcp for a "private" bridge?

[Katriel Traum <katriel@xxxxxxxxxxxxxxxx>]

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Let me guess, you're using Fedora/RedHat.
Their dhcpd is compiled without support for dummy interfaces. I started
out by rebuilding the RPM with dummy interface support, but stopped
after I got tired of chasing fedora's dhcpd updates.

I then turned to henning's idea of a dhcp vm, using a minimal image that
takes only 16M RAM and about twice the disk space.


+Katriel

larsks.21230602@xxxxxxxxxxxxx wrote:
> Hello all,
> 
> 
> 
> I'd like to create a "private" bridge -- that is, one that doesn't
> include an external interface -- and provide DHCP services to Xen VMs attached
> to that bridge.  Mostly, this works great; creating the bridge and the Xen
> VMs worked without a problem.
> 
> 
> 
> Getting dhcp working has been a little more
> difficult.
> 
> 
> 
> In dom0, "dummy0" is 192.168.100.1.  I'd like dhcpd to listen
> on this interface, but dhcpd says:
> 
> 
> 
>   No subnet declaration for dummy0 (0.0.0.0).
> 
> 
> 
> For whatever reason, dhcpd appears to be unable to deal with dummy interfaces.
> 
> 
> 
> What are other folks doing in this situation?  I could try assigning an
> IP directly to the bridge device, rather than using the dummy interface, but
> that strikes me as less than optimal (because it makes the bridge 
> configuration
> unique).
> 
> 
> 
> Thanks for your thoughts,
> 
> 
> 
>   -- Lars
> 
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users

- --
Katriel Traum, PenguinIT
RHCE, CLP
Mobile: 054-6789953
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