I have a Technicolor TG589vn v2 in bridge mode, connected to a wireless router running DD WRT. Now the WAN IP address shown on DD WRT interface is different from my public IP which I believe was same before.  DD WRT router is doing the authentication with connection type set to PPOE. WAN IP shown is 100.XX.XX.X.  Can someone please explain what is going on and what is this WAN IP and where it coming from as Technicolor is in bridge mode with IP address set to 192.168.2.1.
Thanks