Why is my ST hub always listening?

[SBDOBRESCU (Bobby)]

@JDRoberts this is an Osram bulb, but here is an interesting detail:

@dlieberman

SmartThings currently supports insecure rejoin, as many ZigBee HA devices will only attempt to rejoin once with their stored key before reverting to an insecure rejoin mode. This means that without insecure rejoin, if there are any issues rejoining the network after a Hub reboots or a router in the mesh goes away, the device would not be able to rejoin the network and would be effectively stranded.

So it sounds like this applies to ZHA but not ZLL? AI believe, Osram can handle both, right?