Since in-kernel r8169 driver still has unresolved issues on some systems (mostly on systems with shared interrupts like described here: http://www.mail-archive.com/netdev%40vger.kernel.org/msg44981.html), I've written an ebuild for r8168 driver from Realtek which seems to work well in such systems. Reproducible: Always
Created attachment 130222 [details] r8168-8.003.00.ebuild Working ebuild
Created attachment 130223 [details, diff] Makefile.patch Patch for Makefile
Thanks but we prefer to get the unresolved kernel issues fixed as opposed to maintaining external drivers that get broken on every single new kernel version.