After installing and configuring net-misc/strongswan-5.2.0 (via /etc/ipsec.conf) the ipsec system cannot be started via the start script in /etc/init.d/ipsec: # /etc/init.d/ipsec start * Caching service dependencies ... [ ok ] /usr/sbin/ipsec: unknown IPsec command `addconn' (`ipsec --help' for list) * ERROR: ipsec failed to start From looking at the file it appears that this is from a very much earlier version of strongswan that only had pluto: ... description="pluto is an IKE daemon that is used to setup IPSEC VPN connections." ... Reproducible: Always
From what I can see, it looks like you are trying to use an old configuration from when pluto was around. It is more of a issue with strongswan than a Gentoo issue. May I suggest taking it directly to the strongswan upstream people? They will be able to help debug your configuration better than we can. You can find their issue tracker here: https://wiki.strongswan.org/projects/strongswan . Closing as UPSTREAM.
