Move eventhandler for 'ifnet_departure_event' at the end of the progress. Some of the (IPv6) cleanup functions send packets to inform peers of the departure.  These packets confused users of ifnet_departure_event (pf at the moment).
Move eventhandler for 'ifnet_departure_event' at the end of the progress.
Some of the (IPv6) cleanup functions send packets to inform peers of the
departure.  These packets confused users of ifnet_departure_event (pf at the
moment).

PR:		kern/80627
Tested by:	Divacky Roman
MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase