ESPHome Device Builder finds devices whose discovery messages arrive over IPv6, instead of leaving them marked offline or unknown. Linux and Windows hosts can listen over both IPv4 and IPv6; macOS and FreeBSD hosts using both still listen only over IPv4.

Roman Priesol verified the correction with IPv6-only devices behind a UniFi discovery relay and in a Linux container. This is his first contribution to Device Builder, reviewed by J. Nick Koston.