core: Error setting up media_player.sonos

Home Assistant release with the issue:

0.83.0b0

Last working Home Assistant release (if known): unknown

Operating environment (Hass.io/Docker/Windows/etc.):

Docker version 18.09.0, build 4d60db4 on Raspberry Pi 3 running Raspbian GNU/Linux 9.6 (stretch) on Kernel 4.14.52-v7+

Component/platform:

https://www.home-assistant.io/components/sonos/

Description of problem: I used the integration discovery to setup a Sonos speaker. All I had to do was hit the “configure” button. I did not configure the sonos component manually in configuration.yaml, only enabled/configured it in the UI.

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant):

Traceback (if applicable):

2018-11-29 13:47:30 INFO (MainThread) [homeassistant.setup] Setting up sonos
2018-11-29 13:47:30 INFO (MainThread) [homeassistant.setup] Setup of domain sonos took 0.0 seconds.
2018-11-29 13:47:31 INFO (MainThread) [homeassistant.loader] Loaded media_player.sonos from homeassistant.components.media_player.sonos
2018-11-29 13:47:31 INFO (MainThread) [homeassistant.components.media_player] Setting up media_player.sonos
2018-11-29 13:47:31 ERROR (MainThread) [homeassistant.core] Error doing job: Future exception was never retrieved
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/concurrent/futures/thread.py", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.6/site-packages/homeassistant/components/media_player/sonos.py", line 182, in _setup_platform
    interface_addr=config.get(CONF_INTERFACE_ADDR))
  File "/usr/local/lib/python3.6/site-packages/pysonos/discovery.py", line 114, in discover
    _sock.sendto(really_utf8(PLAYER_SEARCH), (MCAST_GRP, MCAST_PORT))
OSError: [Errno 126] No error information

Additional information: