setup is called (via ipsec setup) by the system administrator to perform init system related tasks to Libreswan, such as start, stop, status, reload, etc for the Internet Keying Exchange (IKE) daemon pluto. It is available for backwards compatibility with Openswan and FreeS/WAN.
Man page written for the Linux FreeS/WAN project by Michael Richardson. Original program by Henry Spencer. Updated to m[blue]https://libreswan.org/m> by Paul Wouters