Hi,

The fix for this is still waiting in the pull-up queue for the 1.6 branch.
You can wait for 1.6.2, or watch this URL and build a kernel from source
when it changes:

http://cvsweb.no.netbsd.org/bsdweb.cgi/src/sys/dev/ic/mlx.c?only_with_tag=netbsd-1-6

Andrew