dns ac68u

I have an ASUS RT-AC68U running Merlin, and PIA VPN. I want to run the traffic for my LG WebOS TV through the VPN and there is no way to install a VPN client on the TV locally (which would be the easiest way to switch the tunnel on/off) so my only viable solution is to run it through the router...

ı have asus ac68u router with Firmware Version:3.0.0.4.384_45717 . it has default settings when I connect it with cable . it is not work internet and when i look dns server on windows . it takes fec0:0:0:ffff::1%1 . when i try with wireles . internet work and windows shows dns server as...