- the replay sequence for both inbound and outbound
1) Message Structure
-----------------------
+--------------------
nlmsghdr:aevent_id:optional-TLVs.
A program needs to subscribe to multicast group XFRMNLGRP_AEVENTS
to get notified of these events.
-2) TLVS reflect the different parameters:
------------------------------------------
+2) TLVS reflect the different parameters
+----------------------------------------
a) byte value (XFRMA_LTIME_VAL)
This is a timer value in milliseconds which is used as the nagle
value to rate limit the events.
-3) Default configurations for the parameters:
----------------------------------------------
+3) Default configurations for the parameters
+--------------------------------------------
By default these events should be turned off unless there is
at least one listener registered to listen to the multicast