Using a raspberry pi 3, ddclient, and a 3g gsm dongle (carrier:Telcel), I cannot connect from my remote computer to my domain windsong.mywire.org (200.68.136.176) either to the running node red server (200.68.136.176:1880) nor successfully ping the domain windsong.mywire.org. However, my raspberry pi successfully updates the its IP4v address to the 3g internet address on the Dynu control panel and, for example, can successfully ping Google.com on its PPP0 interface.

What am I doing wrong?

Jim

Did you do any port forwarding?

Think I discovered the problem As I stated I am using a 3g dongle to a gsm network. Apparently, based upon my internet research, most or all carriers block all incoming traffic and thus a ddns solution will not work.