Sorry, blindingly obvious detail I should have included. TD-W9970 v2 Internet access works on both connection methods but VPN pass-through will not work on either. 0.9.1 0.2 v0076.0 Build 170919...

Model : Hardware Version : Firmware Version : ISP : Are there any known settings to get VPN pass through to work? This not configuring the router as a VPN End Point. One laptop has an AT&T VPN client...