The old meson Ethernet fix/patch/hack no longer applies cleanly to the latest (December 1) linux-next, but – fortunately – there is a ‘better’ patch available for the meson8b-dwmac driver itself..
Details can be found in this thread: http://lists.infradead.org/pipermail/linux-amlogic/2016-November/001675.html
I have applied these patches to the December 1 linux-next tree, on the Odroid C2, and the Ethernet link works correctly, again..
...... meson8b-dwmac c9410000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Link is Up - 1000/Full ... Fedora 25 (Workstation Edition) Kernel 4.9.0-rc7-next-20161201-c2 on an aarch64 (ttyAML0)
This is still work-in-progress, but should be available soon as part of the mainline linux-next tree..
Robert Gadsdon. December 1, 2016