Max Khon 617643aaa6 Fix pseudo checksum calculation.
This fixes ipfilter w/ network controllers that implement only
partial rx csum offloading.

PR:			106438
Obtained from:		upstream
MFC after:		1 week
2012-09-27 18:15:01 +00:00
..
2012-09-19 23:25:24 +00:00
2012-09-22 17:41:56 +00:00