Sonarr/Radarr: DNS Name Resolution Failure: 'umbrel.local'

Hello!
I’m trying to add some indexers on Sonarr/Radarr, but I get a DNS error on both of them:

Unable to connect to indexer, please check your DNS settings and ensure IPv6 is working or disabled.
Name does not resolve (umbrel.local:9117)
[v3.0.9.1549] System.Net.WebException: DNS Name Resolution Failure: 'umbrel.local'
  at NzbDrone.Common.Http.Dispatchers.ManagedHttpDispatcher.GetResponse (NzbDrone.Common.Http.HttpRequest request, System.Net.CookieContainer cookies) [0x0015a] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Http\Dispatchers\ManagedHttpDispatcher.cs:95 
  at NzbDrone.Common.Http.HttpClient.ExecuteRequest (NzbDrone.Common.Http.HttpRequest request, System.Net.CookieContainer cookieContainer) [0x00086] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Http\HttpClient.cs:126 
  at NzbDrone.Common.Http.HttpClient.Execute (NzbDrone.Common.Http.HttpRequest request) [0x00008] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Http\HttpClient.cs:59 
  at NzbDrone.Common.Http.HttpClient.Get (NzbDrone.Common.Http.HttpRequest request) [0x00007] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Http\HttpClient.cs:281 
  at NzbDrone.Core.Indexers.Newznab.NewznabCapabilitiesProvider.FetchCapabilities (NzbDrone.Core.Indexers.Newznab.NewznabSettings indexerSettings) [0x000a1] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Indexers\Newznab\NewznabCapabilitiesProvider.cs:64 
  at NzbDrone.Core.Indexers.Newznab.NewznabCapabilitiesProvider+<>c__DisplayClass4_0.<GetCapabilities>b__0 () [0x00000] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Indexers\Newznab\NewznabCapabilitiesProvider.cs:36 
  at NzbDrone.Common.Cache.Cached`1[T].Get (System.String key, System.Func`1[TResult] function, System.Nullable`1[T] lifeTime) [0x000b1] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Cache\Cached.cs:104 
  at NzbDrone.Core.Indexers.Newznab.NewznabCapabilitiesProvider.GetCapabilities (NzbDrone.Core.Indexers.Newznab.NewznabSettings indexerSettings) [0x00020] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Indexers\Newznab\NewznabCapabilitiesProvider.cs:36 
  at NzbDrone.Core.Indexers.Torznab.Torznab.get_PageSize () [0x00000] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Indexers\Torznab\Torznab.cs:23 
  at NzbDrone.Core.Indexers.Torznab.Torznab.GetRequestGenerator () [0x00000] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Indexers\Torznab\Torznab.cs:27 
  at NzbDrone.Core.Indexers.HttpIndexerBase`1[TSettings].TestConnection () [0x00007] in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Indexers\HttpIndexerBase.cs:336 

2023-11-05 20:31:40.5|Warn|SonarrErrorPipeline|Invalid request Validation failed: 
 -- : Unable to connect to indexer, check the log for more details

My /etc/resolv.conf looks like this:

# Generated by resolvconf
domain lan
nameserver 192.168.1.1
nameserver fe80::1%eth0

This is a fresh install of Umbrel OS. I just downloaded Sonarr from the store and trited to add the indexer. I havent installed PiHole.

Anyone have any idea on how I could fix this?

Seems to be a problem related to a Windows machine I had here. Dunno the exact reason, but everything works fine on my Linux machine, I have no DNS problem on it.

im not sure what your setup here was, but i think in this case the mDNS you want is probably jackett_server_1:9117 not umbrel.local:9117