ok, thanks for the explainer.
On 04.01.21 12:20, Daniel P. Berrangé
wrote:
On Fri, Jan 01, 2021 at 10:24:41AM +0100, vrms wrote:I am trying to understand KVM networking a little better and have noted that the "virbr0" network interface (the default KVM bridge) comes with another device named "virbr0-nic". The same kind of pair comes with each new bridge you may create via the "virtual machine manager" (and assumingly other KVM tools alike) Like "virbr1" comes in a pair with "virbr1-nic" (the *-nic interface is being created automatically (and I assume will disapear automatically if you remove the parent interface) Can anybody kindly explain how these pairs are related to each other and/or work together?The "$FOO-nic" device is a tap device created as a hack to force a stable MAC address on the main bridge device due to bad kernel impl of bridge device MAC address assignment. We stopped creating the "$FOO-nic" device in libvirt 6.8.0 since the kernel was long ago fixed. Regards, Daniel
