Does it works on Yosemite?
yes for ar8131 but not reliable in 10.10 GM candidate (due to irq conflict?) (disconnects network after heavy load and error messages, see the quote below)
I tried the other AtherosL1cEthernet but it does not work at all with the error "cannot allocate ring descriptors", I recompiled the AtherosL1cEthernet 1.2.3 with xcode 6.1 gm and fix the gcc to llvm and set to 64bit and osx 10.10 and it works now... doing some load testing...
I discovered on both, using Apple's "Logic Remote" from Wifi (then to ethernet) will kill the driver immediately with "incorrect zfree from zone kalloc.16 to zonekalloc.32".