On Tue, Nov 16, 2010 at 11:51:25AM -0500, David M. Barlieb wrote:
HI, I've just begun using libvirt as part of my KVM installation
and
have been having some confusion regarding networking of my virtual
guests. I'm not sure if I should even be sending this to this mailing
list and if not please let me know and if possible where I should be
sending this inquiry.
I understand I can setup a dedicated bridged interface for my guest. But
as for the virbr interface which is the default, I'm a little confused
about. When using this, does the guest os use the same ip as the host?
If so, then how to packets get to the guest instead of the host. I would
guess there's an alternate mac address for the guest interface and this
is how it gets there but am not certain. Sorry if this seems like a
simple question but I'm not very well versed in networking.
This page describes the two commonly used networking setups
http://wiki.libvirt.org/page/Networking
The virbr0 you get by default is providing NAT forwarding. If you want
full bridging to the LAN, then you should probably follow the second
set of instructions there, and ignore the virbr0 device
Regards,
Daniel
--
|: Red Hat, Engineering, London -o-
http://people.redhat.com/berrange/ :|
|:
http://libvirt.org -o-
http://virt-manager.org -o-
http://deltacloud.org :|
|:
http://autobuild.org -o-
http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|