I am using Wishnet Broadband, its Fiber connection, I am facing a Double NAT issue, Connection is through Syrotech GEPON-ONU (model no- GOPON-1000R-ONUM ) & with this I am using My TP-Link Archer C6 router. Now my main problem is the Double NAT issue. The Wishnet people and the third-party people who set my connection up act clueless when I tell them my problem. Does anyone know how to avoid this double NAT ? Thanks.