>>>>> "Martin" == Martin Husemann <martin@duskware.de> writes:

    Martin>  My NFS server uses this interface, connected to a 100MBit switch:
 
    Martin>  wm0 at pci0 dev 11 function 0: Intel i82541GI 1000BASE-T Ethernet, rev. 0
    Martin>  [...]
    Martin>  I usually enable "ip4csum tcp4csum udp4csum" in
    Martin>  /etc/ifconfig.wm0. I use UDP mounts for NFS.
 
    Martin>  Now - with rev 1.90 of if_wm.c everything works as
    Martin>  expected. With everything later I can get it to work if I
    Martin>  do either of
 
    Martin>   - disable all of the above checksum offloads
    Martin>   - use TCP transport for the mounts
 
Related to

  http://www.netbsd.org/cgi-bin/query-pr-single.pl?number=28595

?