"service ppp restart" fails with a message like : Stopping PPP profile: sfr. ppp already running? (pid=460). I think this is due to the stop part of the ppp rc script merely signalling the service to stop without waiting for it to actually finish (as comments in /etc/rc.subr indicate it should). The failing restart is instantaneous while ppp.log show that the process can take a relatively long time to terminate : Jan 23 18:21:15 metropolis ppp[460]: tun0: Phase: Signal 15, terminate. [...] Jan 23 18:21:46 metropolis ppp[460]: tun0: Phase: PPP Terminated (normal).