# PLUTO_MARK_OUT
# is an optional XFRM mark set on the outbound IPsec SA
#
+# PLUTO_IF_ID_IN
+# is an optional XFRM interface ID set on the inbound IPsec SA
+#
+# PLUTO_IF_ID_OUT
+# is an optional XFRM interface ID set on the outbound IPsec SA
+#
# PLUTO_UDP_ENC
# contains the remote UDP port in the case of ESP_IN_UDP
# encapsulation