Not sure, but I also just started getting this. Also running docker with the container in host networking mode
I should clarify, I only receive this error once when I restart HASS. Also, I can’t seem to discover my cast devices (not sure if related, but it seems to be)
I can confirm I have the same issue
Confirming I have the same issues. Log is flooded with that message every 5 minutes and I can no longer find my Google Cast devices. There are no network security settings set up to block access between the two and this started occurring in 0.86.
Error:
components/discovery.py (ERROR)
Network is unreachable
I change the Python code a bit, and i see the following error in the logging (OSError):
‘[Errno 105] No buffer space available’
I have seen this before, but not continuesly.
I typed the following command:
sysctl net.ipv4.igmp_max_memberships=40
And restart HASS … This solves it, because the max membership is by default 20.
3 Likes
Have had the same issue for quite some time. That command that you mentioned, did you run it in the HASS container or on the host OS?
I tried it on both and neither worked.
EDIT2: Bumped it to 80 and it seems to be working now. Hoping I don’t have to do this every time the container updates…
Yes, it needs to be done on the host OS. You can check/count the current ‘used’ ones with:
netstat -ng
(just check/count the 224.0.., the other ones are IPv6)
To make it permanent after each reboot, add it to the “/etc/sysctl.conf”.
Hmm, having issues doing this on freeBSD. Need to look into it further
I am having the same issue but on Windows 2012 R2
Any known fix?
I’m having a problem with my HASS installation on RPi 4 running docker in Libreelec. I using this fine on a RPi3 and I migrated to a new installation on RPi 4 copying all the userdata folders for docker and Portainer. Everything seems to run ok apart from discovery doesn’t work and I get the error in the log below. I’m running host network mode in docker and I’ve checked to make sure all services on Libreelec aren’t running as I know avahi running can conflict with HASS discovery.
2019-07-14 14:48:01 ERROR (MainThread) [homeassistant.components.discovery] Network is unreachable
2019-07-14 14:51:28 ERROR (MainThread) [aiohttp.server] Error handling request
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/urllib3/connection.py", line 160, in _new_conn
(self._dns_host, self.port), self.timeout, **extra_kw)
File "/usr/local/lib/python3.7/site-packages/urllib3/util/connection.py", line 80, in create_connection
raise err
File "/usr/local/lib/python3.7/site-packages/urllib3/util/connection.py", line 70, in create_connection
sock.connect(sa)
OSError: [Errno 113] Host is unreachable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 603, in urlopen
chunked=chunked)
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 355, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/local/lib/python3.7/http/client.py", line 1244, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1290, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1239, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.7/http/client.py", line 1026, in _send_output
self.send(msg)
File "/usr/local/lib/python3.7/http/client.py", line 966, in send
self.connect()
File "/usr/local/lib/python3.7/site-packages/urllib3/connection.py", line 183, in connect
conn = self._new_conn()
File "/usr/local/lib/python3.7/site-packages/urllib3/connection.py", line 169, in _new_conn
self, "Failed to establish a new connection: %s" % e)
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0xafb83dd0>: Failed to establish a new connection: [Errno 113] Host is unreachable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/usr/local/lib/python3.7/site-packages/urllib3/connectionpool.py", line 641, in urlopen
_stacktrace=sys.exc_info()[2])
File "/usr/local/lib/python3.7/site-packages/urllib3/util/retry.py", line 399, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='192.168.0.40', port=8081): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0xafb83dd0>: Failed to establish a new connection: [Errno 113] Host is unreachable'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/aiohttp/web_protocol.py", line 418, in start
resp = await task
File "/usr/local/lib/python3.7/site-packages/aiohttp/web_app.py", line 458, in _handle
resp = await handler(request)
File "/usr/local/lib/python3.7/site-packages/aiohttp/web_middlewares.py", line 119, in impl
return await handler(request)
File "/usr/src/homeassistant/homeassistant/components/http/real_ip.py", line 33, in real_ip_middleware
return await handler(request)
File "/usr/src/homeassistant/homeassistant/components/http/ban.py", line 67, in ban_middleware
return await handler(request)
File "/usr/src/homeassistant/homeassistant/components/http/auth.py", line 216, in auth_middleware
return await handler(request)
File "/usr/src/homeassistant/homeassistant/components/http/view.py", line 115, in handle
result = await result
File "/usr/src/homeassistant/homeassistant/components/camera/__init__.py", line 478, in get
return await self.handle(request, camera)
File "/usr/src/homeassistant/homeassistant/components/camera/__init__.py", line 495, in handle
image = await camera.async_camera_image()
File "/usr/src/homeassistant/homeassistant/components/mjpeg/camera.py", line 107, in async_camera_image
self.camera_image)
File "/usr/local/lib/python3.7/concurrent/futures/thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "/usr/src/homeassistant/homeassistant/components/mjpeg/camera.py", line 143, in camera_image
req = requests.get(self._mjpeg_url, stream=True, timeout=10)
File "/usr/local/lib/python3.7/site-packages/requests/api.py", line 75, in get
return request('get', url, params=params, **kwargs)
File "/usr/local/lib/python3.7/site-packages/requests/api.py", line 60, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/local/lib/python3.7/site-packages/requests/sessions.py", line 533, in request
resp = self.send(prep, **send_kwargs)
File "/usr/local/lib/python3.7/site-packages/requests/sessions.py", line 646, in send
r = adapter.send(request, **kwargs)
File "/usr/local/lib/python3.7/site-packages/requests/adapters.py", line 516, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='192.168.0.40', port=8081): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0xafb83dd0>: Failed to establish a new connection: [Errno 113] Host is unreachable'))
I don’t think the raspberry pi 4 is supported yet based on their blog
Who’s blog? I’m running on Libreelec in a docker container and HASS works fine apart from discovery.
Sorry, haven’t had my coffee yet. Hassio doesn’t support raspberry pi 4 yet but looks like libreelec does have a beta. Unfortunately I never figured out my discovery issues
1 Like
Also the Pi 4 issue is related to “Host is unreachable”, this topic is around “Network is unreachable”. So different issues, sorry.
Does anyone of you happen to have Pihole running? In my case I am and I think it might be the culprit. Disabled Pihole now and testing with cloudflare dns to see if that works better.
I do…Hmm I’ll have to test this.
@fversteegen @dj21d - did you check the “netstat -ng” output and sysctl commands? If running multiple apps/containers, it is possible you go over such limit (on the main OS).
I did run it, but don’t know how to interpret it 
I have but since I’m running this on freebsd they don’t work for me. Need to figure out the right way to run it for my system
# netstat -ng
netstat: sysctl: net.inet.ip.viftable: No such file or directory
netstat: sysctl: net.inet6.ip6.mif6table: No such file or directory