K 10
svn:author
V 4
lidl
K 8
svn:date
V 27
2016-09-29T19:45:24.813435Z
K 7
svn:log
V 413
Properly preserve ip_tos bits for IPv4 packets

Restructure code slightly to save ip_tos bits earlier.  Fix the bug
where the ip_tos field is zeroed out before assigning to the iptos
variable. Restore the ip_tos and ip_ver fields only if they have
been zeroed during the pseudo-header checksum calculation.

Reviewed by:	cem, gnn, hiren
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D8053

END