This looks like this 61072 b8:27:eb:e1:4e:4d 192.168.0.4 domotycoon * 61072 b8:27:eb:b8:10:6b 192.168.0.5 pimonitor * duid 00:03:00:01:ac:22:0b:e9:98:50 When using match.group() without testing if match != None, you get a traceback.
This looks like this 61072 b8:27:eb:e1:4e:4d 192.168.0.4 domotycoon * 61072 b8:27:eb:b8:10:6b 192.168.0.5 pimonitor * duid 00:03:00:01:ac:22:0b:e9:98:50 When using match.group() without testing if match != None, you get a traceback.