I can agree with Henning but i remember also an (for me) interesting thread that solves my problem with soekris and hifn (read the complete thread).
http://readlist.com/lists/openbsd.or.../12/61303.html
If i remember the card worked for me with 3.7/3.8, some trouble with 3.9 but was broken in 4.0/4,1 and the standart answer was 'it is the buggy hifn chip'