Docker network: LAN to container
Normally when using Docker one only wants specific unicast ports forwarded, so the standard Docker paradigm of using NAT to forward ports to the container works. However, when using Docker to containerize internal services like Samba (which needs a combination of unicast and broadcast UDP), LLMNR (Windows multicast address resolution), or mDNS a.k.a Bonjour (Apple multicast address resolution) one may find that the standard Docker model is insufficient.
By Daniel F. Dickinson on February 21, 2022