wine users - Dec 2008 - Re: Red Alert / Red Alert II / Tiberium Sun: Overriding wsock32.

When I worked on Wine's ipx code for Red Alert and friends posix file
capabilities weren't around yet. I haven't used them yet. You can find
info about it on http://www.ibm.com/developerworks/library/l-posixcap.html

I think that you need to set the property on wineserver.