[SOLVED] Openhabian / Raspberry Pi: Commands like snmpwalk are failing with a timeout

I configured SNMP on a couple of RPIs and wanted now to add my RPI that runs openhab. I used the openhabian image. I double checked that I’ve done everything that way I did it on the other RPIs but the SNMP commands are always ending with a timeout. Are ports blocked on this image?

No.

Any other idea vi snmp is not working? Neither through the localhost nor remotely.

For whatever reason - a reboot helped.