soekris/sis tx checksum problems

[David Cornejo]

Hi,

I am using CURRENT on a Soekris 4801 (sis ethernet).  With a recent 
kernel all TCP packets sent via sis0 have a bad checksum.  Other 
systems using other interface types (though I don't have a broad 
selection to test) don't seem to suffer from this problem.

There was a thread in freebsd-current describing the same/similar 
problem, but there were few complaints (i think they were other 
brands of IF) and no resolution to it, so I'm bringing it up here.

dave c