ipsec _plutorun is called by the ipsec initscript to configure and bring up ipsec-pluto(8). It invokes pluto, and watches to makes sure that pluto is restarted if it fails, as the SYSV initscripts do not provide a restart facility. When other init systems are used, such as systemd or upstart, _plutorun is not used.
Man page written for the Linux FreeS/WAN project <https://www.freeswan.org/> by Michael Richardson. Original program written by Henry Spencer. Updated for the Libreswan project <https://libreswan.org/> by Paul Wouters