Revert "Properly handle non-hex characters in MAC"
Revert "Properly handle non-hex characters in MAC"

This reverts commit 2734a3f0212c722fb9fe3698dfea0dbd8a14faa7.

OSU-Net/arim,OSU-Net/arim,drkitty/arim,drkitty/arim,drkitty/arim,OSU-Net/arim