No internet connection from containers in br0 network

[Thobbit]

Hey guys

I have recently installed the Homeassistant VM. It's working perfectly fine and on the network br0. All my Dockers, that need access from outside over the nginx proxy manager are also placed on the br0 network. Since I installed HomeAssistant the containers lost access to the internet outside of my home. Like I can connect to them perfectly fine in my home network and over the reverse proxy, but the containers can't access any url (like flex can't find metadata to the movies, and prowlarr can't connect to indexers). If I move one of these dockers to the bridge network everything is working great.

 

I have searched for a solution the last three days and I'm at the end of my wits. Does somebody know, why this could be happening?

 

Thank you in advance