# Optional Configuration

You can set these environment variables to configure the container. They are not required, but can be useful in some cases.

Env | Default | Example | Description
--- | --- | --- | ---
`PORT` | `51821` | `6789` | TCP port for Web UI.
`HOST` | `0.0.0.0` | `localhost` | IP address web UI binds to.
`INSECURE` | `false` | `true` | If access over http is allowed
`DISABLE_IPV6` | `false` | `true` | If IPv6 support should be disabled

IPv6 Caveats

Disabling IPv6 will only disable the creation of the default IPv6 firewall rules. The clients will still get an IPv6 address assigned.

This option can be removed in the future, as more devices support IPv6.