Global USE flag

Enable UPnP audio/video streaming support

Packages describing “upnp-av” as local USE flag

Package “upnp-av” Flag Description
media-video/vlc Enable support for the Intel SDK stack based UPnP discovery module instead of CyberLink
net-im/gajim Ability to request your router to forward port for file transfer
net-libs/tox Adds support for audio and video.
net-p2p/bitcoin-qt Enable Universal Plug and Play
net-p2p/bitcoind Enable Universal Plug and Play
net-p2p/ktorrent Forward ports using UPnP

All packages providing a “upnp-av” USE flag (3)