conf/options/charon-nm.opt

charon-nm {}
	Section with settings specific to the NetworkManager backend `charon-nm`.
	Settings from the `charon` section are not inherited, but many can be used
	here as well. Defaults for some settings are chosen very deliberately and
	should only be changed in case of conflicts.

charon-nm.ca_dir = <default>
	Directory from which to load CA certificates if no certificate is
	configured.

charon-nm.install_virtual_ip_on = lo
	Interface on which virtual IP addresses are installed. Note that NM
	also installs the virtual IPs on the XFRM interface.

charon-nm.mtu = 1400
	MTU for XFRM interfaces created by the NM plugin.

charon-nm.port = 0
	Source port when sending packets to port 500. Defaults to an ephemeral
	port. May be set to 500 if firewall rules require a static port.

charon-nm.port_nat_t = 0
	Source port when sending packets to port 4500 or a custom server port.
	Defaults to an ephemeral port. May be set to e.g. 4500 if firewall rules
	require a static port.

charon-nm.retransmit_base = 1.4
	Base to use for calculating exponential back off, see IKEv2 RETRANSMISSION
	in **strongswan.conf**(5). Default retransmission settings for charon-nm are
	deliberately lower to fail and possibly reestablish SAs more quickly.

charon-nm.retransmit_timeout = 2.0
	Timeout in seconds before sending first retransmit.

charon-nm.retransmit_tries = 3
	Number of times to retransmit a packet before giving up.

charon-nm.routing_table = 210
	Table where routes via XFRM interface are installed. Should be different
	than the table used for the regular IKE daemon due to the mark.

charon-nm.routing_table_prio = 210
	Priority of the routing table. Higher than the default priority used for the
	regular IKE daemon.

charon-nm.plugins.kernel-netlink.fwmark = !210
	Make packets with this mark ignore the routing table. Must be the same mark
	set in charon-nm.plugins.socket-default.fwmark.

charon-nm.plugins.socket-default.fwmark = 210
	Mark applied to IKE and ESP packets to ignore the routing table and avoid
	routing loops when using XFRM interfaces.

charon-nm.syslog.daemon.default = 1
	Default to logging via syslog's daemon facility on level 1.