Hi guys, 3 months ago i was able to open any port on my D-link DSL-2750U router without any problem at that time my ISP was giving me 1 Public IP but now i have two different IP one of them is on my routers page in WAN setting and the other one i get it on websites like ip-adress.com they are totally different ... and when i try to open port and check if its open it doesn't work
... the wan ip is accessible from outside internet i mean i can access my router through this ip ( the ip on router's page ) from different internet but the ip that i get from websites is not accessible... plz plz any1 have any idea how to port forward tells me 
and how can i fix this
i was using it in playing online games and also to access my camera from outside
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