I have a bridge working for qemu. I am able to start multiple copies of the same machine and they can network together. I am not interested in connecting to the outside internet. This is all on ubuntu 20.04. The guest systems are emulated arm64 running linux.
What I do need is for the VMs to connect to the host. My current understanding is that I need to create a tap device for the host and add it to the bridge. If the IP addresses are on the same subnet I should be able to ping between host and guests.
I use the "qemu-bridge-helper" to automatically create tapN devices on VM boot.
This is what I have so far that doesn't work:
sudo ip tuntap add name host0 mode tap
sudo ip addr add 169.254.246.10/24 dev host0
sudo ip link set host0 master br0
sudo ip link set host0 up
The iptables configuration (output of iptables-save):
# Generated by iptables-save v1.8.4 on Sun Jul 26 09:35:45 2020
*filter
:INPUT ACCEPT [115122:42396994]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [122239:21074871]
COMMIT
I would be super grateful for anyone to point me in the right direction.
