When using in a docker infrastructure sub-zero will not allow you to use the docker network aliases of radarr/sonarr. It seems like the url field wants to do a DNS lookup each time. When using the alias it wont resolve. This helps with dynamic container ips to resolve to the correct container each time. Also helpful when running containers on localhost.

File "/config/Library/Application Support/Plex Media Server/Plug-ins/Sub-Zero.bundle/Contents/Libraries/Shared/subliminal_patch/http.py", line 351, in patched_create_connection ip = custom_resolver.query(host)[0].address File "/config/Library/Application Support/Plex Media Server/Plug-ins/Sub-Zero.bundle/Contents/Libraries/Shared/dns/resolver.py", line 1051, in query raise NXDOMAIN(qnames=qnames_to_try, responses=nxdomain_responses) NXDOMAIN: The DNS query name does not exist: radarr