Updated kernel for the 3B+ is now on sources. Also contains some performance tweaks for ethernet and usb which should apply to all Pi models.
Kernel source in /n/sources/contrib/miller/9/bcm USB ether driver in /n/sources/patch/usb-ether-lan78xx Compiled kernels in /n/sources/contrib/miller/9pi2 and 9pi Note that the usb-ether-lan78xx patch subsumes and supersedes usbether-rpi and usb-ether-cdc, so you may need to revert those before applying the new patch.
