Rust:IRC 1.0.2 Update Notes
New Lobby Channel Option
Added option: "lobby": true/false (default for new configs is false). Lobby channels are meant to be a hub channel for idling, and will ONLY display Joins, Quits, and when the server is back online after a restart, no chat or deaths will display in these channels.
To use a lobby channel with an existing config, add "lobby": true line to your channel block code.