routeros-mac-telnet

MAC-Telnet protocol (MikroTik Layer-2 terminal/exec over UDP 20561) wire format, session handshake, and MD5 + MTWEI (EC-SRP) authentication. Use when: implementing or debugging a MAC-Telnet client/server, reaching a RouterOS device by MAC address without IP, parsing MAC-Telnet packets, understanding the WinBox-style L2 terminal, deciding between classic MD5 and modern MTWEI auth, or when the user mentions MAC-Telnet, mactelnet, mactelnetd, port 20561, or MTWEI/EC-SRP RouterOS login.