K 10
svn:author
V 4
will
K 8
svn:date
V 27
2015-01-22T17:09:54.035352Z
K 7
svn:log
V 707
Improve CARP logging so that all state transitions are logged.

sys/netinet/ip_carp.c:
	Add a "reason" string parameter to carp_set_state() and
	carp_master_down_locked() allowing more specific logging
	information to be passed into these apis.

	Refactor existing state transition logging into a single
	log call in carp_set_state().

	Update all calls to carp_set_state() and
	carp_master_down_locked() to pass an appropriate reason
	string.  For state transitions that were previously logged,
	the output should be unchanged.

Submitted by:	gibbs (original), asomers (updated)
MFC after:	1 week
Sponsored by:	Spectra Logic
MFSpectraBSD:	1039697 on 2014/02/11 (original)
		1049992 on 2014/03/21 (updated)

END