Overseerr HA Add-on not reachable / localhost IPv6 connection refused

[lem0th]

Environment:

Home Assistant OS 17.0 (aarch64, Raspberry Pi 4)
Home Assistant Core 2026.2.0
Supervisor 2026.01.1
Overseerr Add-on v0.1.0
Overseerr v1.33.2

Problem:

Overseerr starts successfully according to logs but the web UI is not reachable via http://<HA-IP>:5055.
Additionally, internal scheduled jobs fail because Overseerr cannot reach itself via localhost.

[info][Server]: Server ready on 0.0.0.0 port 5055

[warn][Plex Scan]: No admin configured. Plex scan skipped.

AxiosError: connect ECONNREFUSED ::1:5055
Request URL: http://localhost:5055/api/v1/settings/public

Expected behavior:

• Web UI reachable via configured port
• Internal jobs should be able to reach Overseerr via loopback

soo.. is IPv6 binding missing or disabled in this add-on or is there a supported way to force IPv4 (e.g. 127.0.0.1 or NODE_OPTIONS=--dns-result-order=ipv4first)?