Linux: Add Virtual Interface for KVM

Question

On a CentOS server, ifconfig shows several vnetX interfaces (vent1, vent2, vent100), how can I add some more?

(I'd like to add a couple of virtual machines, so I need to add some more virtual interfaces that I can assign to the virtual machines).

Also, from what I understand, these vnetX interface are internal, between the host and virtual guest, is this correct?

dyasny · Accepted Answer · 2012-03-09 20:23:38Z

these are set up on the VM level, you assign NICs to a VM, and it starts with them, creating vnetX NICs in the process.

As for how the networking is set up, just search for "libvirt bridge" and "libvirt NAT"

proy · Accepted Answer · 2012-03-09 17:17:02Z

0

Why not use bridge mode in KVM for the Guest machines.

answered Mar 9, 2012 at 17:17

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tarzxvf · Accepted Answer · 2012-03-09 17:38:28Z

I think he is probably using bridge mode, check this typing brctl show. If there is one bridge, you can add extra interfaces using tunctl tool.

Like this: tunctl -u root -t interfaceNameX

3 Answers 3