Docker Bridge

To identify the primary bridge on your NAS find list and look for a mac id with no IP not associated with any containers. Easier if you do with no containers on the system.

In my NAS the Primary Bridge is BR0

docker network create -d macvlan \ --subnet=172.29.66.0/24 \ --gateway=172.29.66.1 \ -o parent=br0 dockerlan

docker network create \ --subnet=172.29.74.0/24 \ --gateway=172.29.74.1 \ -o parent=br0 backend