OK, I set up a quick fix KMP for Leap kernel in OBS home:tiwai:bnc944978/rtl8821ae repo. It takes some time until it's built and published. In the above, there are two repos, standard and devel. The former is for the current OBS openSUSE:Leap:42.1 and the latter is for OBS Kernel:openSUSE-42.1 repo. Once when you installed KMP (choose the right one for your running kernel, i.e. *-kmp-desktop.rpm), check whether you see the update module. The command below: modinfo rtl8821ae | grep filename should show the path containing "/updates/" or "/weak-updates/".