How to set the Rust+ public IP on a Rust server

Add +app.publicip 203.0.113.10 to the launch options so the Rust+ app reaches the server on that public address, useful behind NAT.

app.publicip

Sets the public IP address the Rust+ companion app should use to reach the server.

+app.publicip <address>

Examples

+app.publicip 203.0.113.10

Advertise this IP to Rust+.

Arguments

addressRequired: Public IPv4 address.

What it does

Leave it empty to detect it automatically. Set it explicitly when the server sits behind NAT or has several addresses and Rust+ pairing fails.

The game's own description: Public IP address advertised to the Steam server browser; leave empty to auto-detect; set explicitly if behind NAT

Run it on your server

Type it in the server console or send it over RCON; admins can also use the F1 console in game. To keep a setting, run server.writecfg after changing it, or put it on the launch line as +name value.

Your own
game server.

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