DLNA servers considered:
- Minidlna: development stalled, Debian package was last touched in 2017
- Rygel: too new. Moves fast, breaks things - not ok to be stuck with the version from Debian Stable
- Gerbera: long history, development is rather active. Package for Debian Stable is pretty outdated yet fully functional. Even if the maintainer will not show up for the next Stable, there are unofficial packages from Debian Multimedia