Mikrotik MAC-Telnet (mactelnet)
Mikrotiks MAC-Telnet protocol, used in their RouterOS based products.
The Mac-Telnet protocol is a proprietary protocol used by Mikrotik's RouterOS product. All hardware installed with their RouterOS has the (optional) possibility to accept telnet connections via UDP packets, even without having any IP address set on any interface at all. This way, if enabled, you can still telnet your router, even if you have lost it's IP address, or misconfigured the interface.
The mactelnet dissector is fully functional, but may lack some information about all the possible data packet types.
http://www.omniflux.com/devel/mikrotik/Mikrotik_MAC_Telnet_Procotol.txt - The Mac Telnet protocol reverse engineered by Omni Flux
http://www.mikrotik.com/ - The homepage of MikroTik
https://github.com/haakonnessjoen/MAC-Telnet/ - Open source implementation of the Mac Telnet protocol