0000 is the hub; possibly you are seeing the normal 'hub periodically sending a message to itself to make sure the radio is alive on a quiet network' mentioned here: Zigbee log showing device 0000(0)
0000 is the hub; possibly you are seeing the normal 'hub periodically sending a message to itself to make sure the radio is alive on a quiet network' mentioned here: Zigbee log showing device 0000(0)