Hello! 
Been working on this, SNMP UDF is a bit incomplete, but found a way to make it work as I wanted. 
  
 
  Features 
 Restarts wan connection
 Retrieve connected devices (Local IP/MAC address/device name)
 Displays: router external ip | up time | brand & model
I made this for my home router, but probably works on others models and brands (except the restart function, that is a TP-LINK exclusive xD) 
  TP-Link Manager v0.7.1.zip (v0.7 - 38 downloads) 
  #Changelog