charon.plugins.kernel-libipsec.allow_peer_ts = no Allow that the remote traffic selector equals the IKE peer. Allow that the remote traffic selector equals the IKE peer. The route installed for such traffic (via TUN device) usually prevents further IKE traffic. The fwmark options for the _kernel-netlink_ and _socket-default_ plugins can be used to circumvent that problem. charon.plugins.kernel-libipsec.fwmark = charon.plugins.socket-default.fwmark Firewall mark to set on outbound raw ESP packets. charon.plugins.kernel-libipsec.raw_esp = no Whether to send and receive ESP packets without UDP encapsulation if supported on this platform and no NAT is detected.