OH3 in docker - KNX communication stops after working for 5 min

Dear all,

I installed openhab3 on a docker system (see hardware description below).
I used this installation description: Initial Setup of OH3 with Docker/Portainer, InfluxDB, Grafana and NodeRed

After installing and importing my .things and .items file from an existing OH2 installation, everything seems to work fine. But after several minutes, the KNX Interface notifyed a communication error and all assinged items were offline.
I dont know how to investigate further steps. Do you have any idea whats wrong?

This is the bridge thing

Bridge knx:ip:bridge "KNX IP Bridge" [ 
  • Platform information:
    • Hardware: RPi 4 (8GB RAM), OS installed on external SSD
    • OS: RPi OS 64 Bit (lite, without desktop)
    • Java Runtime Environment: ?
    • openHAB version: 3.0.1 (pulled from docker hub)
  • Issue of the topic: please be detailed explaining your issue

Hello Julian,

I used to have similar issues with the KNX connectivity and I did not find a “structured” way of solving my issues.
Yet it appears that the shorter your Bridge config is the more stable it gets?!?

So here’s my Bridge config that works really well:

Bridge knx:ip:bridge  [ 

Thak you very much Andreas,

unfortunately this workaround doesn’t work for me.
Same problem, after ca, 5 min - KNX Bridge notify communication error.
Any other ideas?

I installed a regular openhab3 (arm64) System. And i Imported the Same files as in the docker System. But in the actual Installation eveything is working pretty good, with no communication errors. So this issue is docker related. Are there Any docker advance User?