ES450 AT&T how to configure to pass Wan IP with dyndns

I made the changes you suggested and rebooted the ES450 and it is issuing a ip address of 10.42.70.245

the actual IP address was 107.77.237.98 using myip.com

how can I program the ES450 to act in bridge mode and pass the actual IP address so that I can use a DDNS service. Until I can get the real IP its not going to work.

this is a huge problem, looking for any advice possible.

Thank you :neutral_face: