On Sat, 2010-06-26 at 19:28 -0700, Mark wrote:
You could try to contact RealTek to see if they have a solution, or check for a compatible driver online....
Having spent most of the afternoon running google searches and reading resulting web pages, I get the impression that the Realtek 8172 is supported in the 2.6.32 kernel. So maybe it'll work with RHEL/Centos 6 when it comes around.
In the meantime, I think I'm out of luck. The ndiswrapper solution appears to be unstable with this Realtek thing (according to what I've read) so I don't think that's a solution either.