Moving Game Lanes to Envoy Gateway: a UDP Listener and UDPRoute for Factorio Beside the HTTPS Listeners

Overview

The last ingress-nginx consumer is not HTTP at all. Factorio's LAN players reach the game through a UDP map on the controller, the line added in Factorio on the Owned Tunnel. Gateway API expresses that as a UDPRoute[^1], an experimental kind the foundation article's chart installed alongside the standard ones. This article adds a UDP listener to the Gateway and routes the game port to its Service. The route lands dormant like the private HTTP routes before it: the ingress-nginx map keeps serving LAN players until the single private-wildcard cutover, which activates all three routes at once. Minecraft's lanes follow the same shape when that game converts.