NRPE daemon gives opportunity to be run under xinetd. Unfortunately it doesn't have 'xinetd' USE flag that would install standard configuration file under '/etc/xinetd.d' directory and add 5666/tcp service in '/etc/services'. Should be quite straighforward to do. Reproducible: Always Steps to Reproduce: 1. Install fresh nagios-nrpe with emerge -Dav nagios-nrpe Expected Results: '/etc/xinetd.d/nagios-nrpe' - standard xinetd config file, e.g. "service nagios-nrpe { socket_type = stream protocol = tcp wait = no user = nagios group = nagios server = /usr/bin/nrpe server_args = -c /etc/nagios/nrpe.cfg -i disabled = yes }" and services in '/etc/services': "nagios-nrpe 5666/tcp nagios-nrpe 5666/udp"
Fixed in net-analyzer/nagios-nrpe-2.13. Thanks!