ksysguard currently only supports the zeroconf USE flag: DEPEND="lm_sensors? ( sys-apps/lm_sensors ) zeroconf? ( net-misc/mDNSResponder )" It should alternatively support avahi and require that avahi is built with the mdnsresponder-compat USE flag. See kdelibs or ntp for example. NB: mDNSResponser (zeroconf) and avahi are mutually exclusive. Reproducible: Always Steps to Reproduce:
The flag is already gone in 3.5.7.