What's the deal with hardware checksum and net.inet.udp.checksum?

gnn at freebsd.org gnn at freebsd.org
Wed Jul 9 21:26:54 UTC 2008

I would assume that if a card, say the em, has hardware TX checksum
that the UDP checksum could be calculated by the hardware, but this
seems not to be the case.  The manual pages are unhelpful in this regard.


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