K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2017-12-05T22:02:46.613038Z
K 7
svn:log
V 355
vnic: apply hardware L3 checksum only for IPv4

Previously we set the csum_l3 flag for IPv4 and IPv6, but only IPv4
should have header checksumming applied.

Prompted by Linux commit fa6d7cb5d76cf0467c61420fc9238045aedfd379.

Reviewed by:	bz
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D13366

END