Indeed it's a Realtek r8169 stuff, and my r8169-KMP would work on Leap 15.2. Hopefully we'll catch up the recent code in Leap 15.3 for r8169. And the AMD platform is Renoir, and we'll (again hopefully) get the support on Leap 15.3, but I wouldn't bet for the chance to have a support on Leap 15.2 (possibly covered by a KMP update, though). In anyway, it's better to disable Secure Boot; otherwise the unofficial KMP wouldn't work.