RTL8169 worked on 10.13.2 perfect!

OS Version: macOS High Sierra 10.13.2
1. Backup /System/Library/Extensions/IONetworkingFamily.kext
2. Copy AppleRTL8169Ethernet.kext into IONetworkingFamily.kext/Contents/PlugIns
3. Delete /System/Library/Extensions/IONetworkingFamily.kext and drag new IONetworkingFamily.kext into Kext Utility.
4. When Kext utility show text:

All done.
Have a nice ... day(night)
Enjoy ..

Reboot system.

View attachment 373069