Question about configure dnsmasq on hass.io on docker

Please help me configure the dnsmasq plugin. In hass.io on the docker I have duckdns configured and from that moment I can’t connect to local ip, that’s why I decided to configure dnsmasq. My configuration looks like this:

defaults:
  - 37.8.214.2
  - 31.11.202.254
forwards: []
hosts:
  - host: xxx.duckdns.org
    ip: 192.168.1.xxx

When I try to start the plugin in the logs this information appears:

20-03-12 16:06:13 ERROR (SyncWorker_13) [supervisor.docker] Can’t start addon_core_dnsmasq: 500 Server Error: Internal Server Error (“driver failed programming external connectivity on endpoint addon_core_dnsmasq (xxxxxxxxxxxxxxxxxxx): Error starting userland proxy: listen tcp 0.0.0.0:53: bind: address already in use”)

Please help

Looks like your system already runs a dns server. (Or something on port 53).

Is there something enabled by default on pure hass.io on this port ?? how i can check this

Hi stefan1818,

did you solved the issue ? I have the same actaully…

Best Regards

Do you have something else running on port 53?

Hi,

No, I used telnet to check and nothing on this port:
telnet hassio_server 53

On the port 22 is ssh and telnet works on port 8213 the same. I have an installation with docker.
Generally I have quite good understanding of Linux, networking, I am an administrator,
but docker is totally new thing for me and I cannot find relation here,
Could you help?

Additional info is that I have only Duckdns and Samba addons

Best Regards

It is possibly being blocked by the home assistant dns container.

I see that container like you wrote is running. This is my first week with hassio, do you know how can I this issue workaround?
Many thanks in advance nickrout