USB networking had a breakage recently in nemo:devel:mw that you may have been unlucky enough to upgrade to (at least, I was :-)).
To check if you're affected: rpm -q usb-moded and check for version 0.63. If you see something like this, it's probably broken: usb-moded-0.63-14.1.Nemo.armv7hl If you see something like this, it's probably ok: usb-moded-0.62.2-15.1.Nemo.armv7hl To fix, use wireless networking to zypper ref, and zypper install --force usb-moded, which should offer to install 0.62. After that, killall usb_moded (as root) and you should have working usbnet again. BR, Robin
