On 14/05/2020 15:50, Reco wrote:
Im sorry I dont understand where the default route comes into it as none of the interfaces, virtual, bridge or the corresponding real hardware interface have any layer 3 addressing assigned, they are purely working at L2.Qemu uses /etc/qemu-ifup by default which deliberately puts tap interface to the bridge which corresponds to the default route.
Ive got many VMs working with 1 virtual interface. Some on br1 some on br2 some on br3, its only when I try to put a VM on more than one I get a problem
The bridges are setup like this #br1 on enp8s0f1 which has no IP address assigned /sbin/brctl addbr br1 /sbin/brctl addif br1 enp8s0f1 /usr/bin/tunctl -u root -t br1p0 /sbin/brctl addif br1 br1p0 /usr/bin/tunctl -u root -t br1p1 /sbin/brctl addif br1 br1p1 . . . /sbin/ip link set enp8s0f1 up /sbin/ip link set br1 up #br2 on ens7f0 which has no IP address assigned /sbin/brctl addbr br2 /sbin/brctl addif br2 ens7f0 /usr/bin/tunctl -u root -t br2p0 /sbin/brctl addif br2 br2p0 /usr/bin/tunctl -u root -t br2p1 /sbin/brctl addif br2 br2p1 . . . /sbin/ip link set ens7f0 up /sbin/ip link set br2 up
