Log level for outgoing traffic.
+`log_nf_conntrack`: `<boolean>` ('default =' `0`)::
+
+Enable logging of conntrack information.
+
`ndp`: `<boolean>` ::
Enable NDP.
+`nf_conntrack_allow_invalid`: `<boolean>` ('default =' `0`)::
+
+Allow invalid packets on connection tracking.
+
`nf_conntrack_max`: `<integer> (32768 - N)` ::
Maximum number of tracked connections.