How to control/assign predefined wda port and not to use dynamic port for wda

[kisnadhotre]

Since in controlled VPN labs the assigned port is being restricted and it hang up when /status call is triggered
getting exception as
[WD Proxy] Matched '/status' to command name 'getStatus'
[WD Proxy] Proxying [Get /status] to [GET http://127.0.0.1:63700/status] with no body
[iProxy@xxx:63700] Connection was refused to port 63700
[WD Proxy] socket hang up

When i try to pass appium:wdaLocalPort capability its still taking up dynamically assigned port.
Please assist.