Fine Tuning for DILWL WAN links from 12 to 15 Jan 2019

Fine tuning for DILWL WAN was conducted from 12 to 15 Jan 2019.  During the period, there is a little bit unsteadily in WAN network traffic.  

It has been completed on 16 Jan 2019 by ITSD.  Traffic from HQ/IVE-CW to WiFi Student is via WAN B.