vn-ansible/roles/ipsec/files/vn.conf

charon {
	cisco_unity = yes

	filelog {
		log {
			path = /var/log/strongswan/charon.log
			append = yes
			default = 1
			flush_line = yes
			ike_name = yes
			time_format = %Y-%m-%d %H:%M:%S
		}
	}
	syslog {
		identifier = charon
		daemon {
		}
	}
}