Re: [libvirt] RFC: configuring host interfaces with libvirt

On Fri, Jan 16, 2009 at 12:41:42PM +0000, Daniel P. Berrange wrote: > On Fri, Jan 16, 2009 at 12:35:55PM +0000, Richard W.M. Jones wrote: > > On Fri, Jan 16, 2009 at 01:13:18AM +0000, David Lutterkort wrote: > > > For certain applications, we want libvirt to be able to configure host > > > network interfaces in a variety of ways; currently, we are most > > > interested in teaching libvirt how to set up ordinary ethernet > > > interfaces, bridges, bonding and vlan's. > > [...] > > > 3. Implementation > > > ================= > > > > > > Configuring network interfaces is highly OS and OS-variant/distro > > > dependant. There are at least two different ways how libvirt can go about > > > modifying the host to create interfaces: > > > > > > 1. Modify the system's network setup scripts (ifcfg-XXX on RH) > > > > > > 2. Directly use the system's network utilities like ifconfig > > > > > > 3. Rely on NetworkManager (not an option right now, as NM doesn't know > > > about bridges and the like) > > > > I must be missing something here ... how can libvirt modify stuff > > inside the guest? > > It can't - this is all about configuring & managing networking on the > host OS. Well OK then, how does the information get passed into the guest?