Updated the CuBox-I4Pro to Kernel 4.0-rc4 – from kernel.org, and – at last – networking works without the need for the mach-imx6q.c patch.

Fedora release 22 (Twenty Two)
Kernel 4.0.0-rc4 on an armv7l (ttymxc0)
........................
# uname -a
Linux rgcubox 4.0.0-rc4 #1 SMP Sun Mar 15 21:55:09 EDT 2015 armv7l armv7l armv7l GNU/Linux

Details of changes from -rc3 are here:  http://lkml.iu.edu/hypermail/linux/kernel/1503.1/05704.html

Robert Gadsdon.  March 15, 2015.