swan-updown-0.2.5 is not a library.
swan-updown
see updown plugin.
First, it parses PLUTO_* and cli args.
Then it helps create ipsec interfaces on demand and log to syslog.
usage
To utilize swan-updown, specify
connections.<conn>.children.<child>.updown = swan-updown [OPTIONS]
in swanctl.conf
For its arguments, see swan-updown -h.
what it will do
interface
It will [create / destroy] XFRM interface when an SA is [established / deleted].
The name of the interface will be {prefix}{hex encoded if_id}.
The prefix can be specified by --prefix argument and the if_id is the PLUTO_IF_ID_IN environment variable.
swan-updown also adds altnames to the interface. The altnames will show
- the local and remote IKEIDs pair
- the local and remote IP addresses pair
Additionally, if --netns is specified, the created interface will be moved into the given netns.