I'm not sure you guys are debugging this properly. The commit you mention is from a year ago (Nov 3 2015) and we've had no other mention of this bug from anyone else. Did you bisect the kernel or just remove i211-related patches until you got your part to work? I know the kernel networking stack is being revised and they've created bugs recently. If you do think this is the problem, please submit this to intel-wired-lan@lists.osuosl.org so all kernels can be fixed.