http://bugs.winehq.org/show_bug.cgi?id=12839
--- Comment #1 from Juan Lang juan_lang@yahoo.com 2008-04-28 10:55:42 --- There should be an iphlpapi component for this. Also, I'm not sure the summary quite captures the problem. It's true that the test fails, but in this case that's expected: there are pieces of iphlpapi that are unimplemented on PC-BSD.
Is there some sort of Linux compatibility you can enable? A lot this can be fixed with a /proc filesystem, which FreeBSD can emulate.