Hello.

I am trying to get artiq up and running on a new system and am running into a confusing connection error. When I try and run a simple script, even something as simple as led.py, kernel's won't execute. The scripts get hung trying to connect to the system and I am not sure why. I can ping my system and generated the device_db from artiq.frontend.artiq_ddb_template file.json. I made a very simple json file that I am pretty sure is correct. Any thoughts on what causes this or how to fix would be greatly appreciate. I copied the trace back below.

<pre>Traceback (most recent call last):
File &quot;/nix/store/9vw2xqcqvcj4hsiiicwrq7gz41j3vp56-python3.8-artiq-6.7604.040aa6fd/bin/.artiq_run-wrapped&quot;, line 9, in &lt;module&gt;
sys.exit(main())
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/frontend/artiq_run.py&quot;, line 225, in main
return run(with_file=True)
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/frontend/artiq_run.py&quot;, line 211, in run
raise exn
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/frontend/artiq_run.py&quot;, line 204, in run
exp_inst.run()
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/language/core.py&quot;, line 54, in run_on_core
return getattr(self, arg).run(run_on_core, ((self,) + k_args), k_kwargs)
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/coredevice/core.py&quot;, line 132, in run
self.comm.check_system_info()
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/coredevice/comm_kernel.py&quot;, line 342, in check_system_info
self._write_empty(Request.SystemInfo)
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/coredevice/comm_kernel.py&quot;, line 310, in _write_empty
self._write_header(ty)
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/coredevice/comm_kernel.py&quot;, line 302, in _write_header
self.open()
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/coredevice/comm_kernel.py&quot;, line 188, in open
self.socket = initialize_connection(self.host, self.port)
File &quot;/nix/store/q9g5las56vhbl7xin0msynzr1mpn19nz-python3-3.8.8-env/lib/python3.8/site-packages/artiq/coredevice/comm.py&quot;, line 25, in initialize_connection
sock = socket.create_connection((host, port))
File &quot;/nix/store/qy5z9gcld7dljm4i5hj3z8a9l6p37y81-python3-3.8.8/lib/python3.8/socket.py&quot;, line 808, in create_connection
raise err
File &quot;/nix/store/qy5z9gcld7dljm4i5hj3z8a9l6p37y81-python3-3.8.8/lib/python3.8/socket.py&quot;, line 796, in create_connection
sock.connect(sa)
TimeoutError: [Errno 110] Connection timed out
</pre>