[libvirt-users] Convincing libvirt to create a bridge device?
I was hoping that I could delegate creation of bridge devices to libvirt for address-less bridges, in order to not have to deal with the various ways distributions handle persistent network configuration, but while this creates a libvirt network... <network> <name>provision</name> <forward mode='bridge'/> <bridge name='brprov'/> </network> ...it doesn't actually create the bridge. Configuring the bridge using either <forward mode="route"/> or <forward mode="nat"/> *will* create the bridge device, but both of these require assigning an address to the bridge which means I have to suddenly worry about IPAM and conflicts with local networks. I look at the various interface-related commands, and there is an "iface-bridge" command but this requires a physical interface. Is there any way to convince libvirt to create the bridge device for a <forward mode='bridge'/> network? -- Lars Kellogg-Stedman <lars@redhat.com> | larsks @ {freenode,twitter,github} Cloud Engineering / OpenStack | http://blog.oddbit.com/
On 03/06/2016 03:21 PM, Lars Kellogg-Stedman wrote:
I was hoping that I could delegate creation of bridge devices to libvirt for address-less bridges, in order to not have to deal with the various ways distributions handle persistent network configuration, but while this creates a libvirt network...
<network> <name>provision</name> <forward mode='bridge'/> <bridge name='brprov'/> </network>
...it doesn't actually create the bridge. Configuring the bridge using either <forward mode="route"/> or <forward mode="nat"/> *will* create the bridge device, but both of these require assigning an address to the bridge which means I have to suddenly worry about IPAM and conflicts with local networks.
Remove the <forward mode='bridge'/> line from your config above and it should do what you want - libvirt will create the bridge, but won't assign any IP address to it (nor will it attach it to any physical device).
On Sun, Mar 06, 2016 at 07:59:38PM -0500, Laine Stump wrote:
configuration, but while this creates a libvirt network...
<network> <name>provision</name> <forward mode='bridge'/> <bridge name='brprov'/> </network>
...it doesn't actually create the bridge...
Remove the <forward mode='bridge'/> line from your config above and it should do what you want - libvirt will create the bridge, but won't assign any IP address to it (nor will it attach it to any physical device).
Wow, that totally works, and makes my life much simpler. Thanks! -- Lars Kellogg-Stedman <lars@redhat.com> | larsks @ {freenode,twitter,github} Cloud Engineering / OpenStack | http://blog.oddbit.com/
participants (2)
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Laine Stump -
Lars Kellogg-Stedman