systemd provides a sane means to assign a human-chosen persistent name to a network interface. https://wiki.debian.org/NetworkInterfaceNames#CUSTOM_SCHEMES_USING_.LINK_FILES Can an audio device be named similarly? Eg. given two USB audio adapters how would they be assigned the names "USBheadset" and "USBspeakers"? Thanks, ... Peter E. -- 123456789 123456789 123456789 123456789 123456789 123456789 123456789