"PermissionError: [Errno 1] Operation not permitted"

Where?

HA starts just fine and OZW seems to do fine, except it can never discover any devices besides the stick. (“No neighbors”)

The only thing in home-assistant.log is an exception:

2017-09-07 08:50:59 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved Traceback (most recent call last): File "/usr/lib64/python3.4/asyncio/tasks.py", line 242, in _step result = coro.throw(exc) File "/usr/lib/python3.4/site-packages/homeassistant/components/discovery.py", line 124, in scan_devices results = yield from hass.async_add_job(_discover, netdisco) File "/usr/lib64/python3.4/asyncio/futures.py", line 358, in __iter__ yield self # This tells Task to wait for completion. File "/usr/lib64/python3.4/asyncio/tasks.py", line 297, in _wakeup future.result() File "/usr/lib64/python3.4/asyncio/futures.py", line 274, in result raise self._exception File "/usr/lib64/python3.4/concurrent/futures/thread.py", line 54, in run result = self.fn(*self.args, **self.kwargs) File "/usr/lib/python3.4/site-packages/homeassistant/components/discovery.py", line 150, in _discover netdisco.scan() File "/home/bill/.homeassistant/deps/lib/python3.4/site-packages/netdisco/discovery.py", line 60, in scan self.gdm.scan() File "/home/bill/.homeassistant/deps/lib/python3.4/site-packages/netdisco/gdm.py", line 21, in scan self.update() File "/home/bill/.homeassistant/deps/lib/python3.4/site-packages/netdisco/gdm.py", line 76, in update sock.sendto(gdm_msg, (gdm_ip, gdm_port)) PermissionError: [Errno 1] Operation not permitted

It does seem to be related to discovery, but does not bother to say where the permission error is!

/home/ned/.homeassistant# dir /dev/ttyA*
crw-rw----. 1 root dialout 166, 0 Sep 7 09:06 /dev/ttyACM0
/home/ned/.homeassistant# cat /etc/group |grep ned
dialout:x:18:ned
ned:x:1000:ned
/home/ned/.homeassistant# ps aux |grep hass
ned 48415 1.2 3.7 1011796 76056 ? Ssl 09:06 0:02 /usr/bin/python3.4 /usr/bin/hass