[MAC] Rewritten MAC address retrieval to eliminate external programs
[MAC] Rewritten MAC address retrieval to eliminate external programs

Signed-off-by: Ondra Hujňák <4a9a1736d2a2ce37ca2f5d4d8d76714a3b18e4c0@vut.cz>

BeeeOn/adapter-tools,BeeeOn/adapter-tools