K 10
svn:author
V 2
bz
K 8
svn:date
V 27
2008-12-17T12:52:34.222487Z
K 7
svn:log
V 430
Use inc_flags instead of the inc_isipv6 alias which so far
had been the only flag with random usage patterns.
Switch inc_flags to be used as a real bit field by using
INC_ISIPV6 with bitops to check for the 'isipv6' condition.

While here fix a place or two where in case of v4 inc_flags
were not properly initialized before.[1]

Found by:	rwatson during review [1]
Discussed with:	rwatson
Reviewed by:	rwatson
MFC after:	4 weeks

END