I want to know if there is any way other than using linux bridges to interconnect interfaces from two virtual machines ?
Since I am trying to run private spanning tree implementation in virtual machines ... underlying linux bridge which connects both the virtual machines is dropping the BPDUs.
VirtualBox solves the issue by providing internal-network option.
Is there any similar option if I use KVM ?
Update-01: Enabling STP would end up creating a topology containing 3 bridges (2VMs and 1 Linux bridge connecting both the VMs) instead of 2 bridges (2VMs).