Not working in macOS Sierra 10.12.6
kxld[com.insanelymac.RealtekRTL8100]: The super class vtable 'vtable for IOEthernetController' for vtable 'vtable for RTL8100' is out of date. Make sure your kext has been built against the correct headers.
Link failed (error code 5).
Prelink failed for com.insanelymac.RealtekRTL8100; omitting from prelinked kernel.