Hi all, I previously set up remote access with Duckdns over 3 years ago and everything was fine. Then all of the sudden when I traveled recently, I realized I could not access it remotely.
IPv6 is usually prioritized over IPv4 and your IPv6 might not be configured correctly.
IPv6 do not require portforwarding, but you need to have a globally routable address on your HA installation and your firewall need to be open for that traffic.
Well this is good news and strange and embarrassing. As this morning, after leaving it overnight without success. It all of the sudden works.
Not sure if it is DuckDNS, or my Eero router setting. My Eero router seems like a lot of the settings are stored or done with the cloud, so may take longer to update, also maybe DuckDns also takes time to update the parameters. Embarrassing as I really do not know what changed and what was the solution, Only can think that something related to the settings in the cloud taking time to update.
At least maybe this info will help others having the same issues.
DuckDNS use the IP-address you connect from, so issues with settings have no effects, as long as you can connect to the internet.
You can check you public IP address on myip.com and that should be the same as the one your DuckDNS address resolve.