I have a cellular modem for internet service where I live… it’s my only option. I also have a wiif router connected to this modem along with my RPI and a couple of Sonoffs. Everything is on the same local network.
Now that I have my base system with HA running, I would like to get DuckDNS running but, I’m having loads of trouble. Basically, I’m unable to access my home network using DuckDNS and I don’t have any errors reported in HA.
Has anyone else had problems using Cell Modem / DuckDNS? Are there any special configurations required?
Does the mobile provider give you a real IP address or does it use CGNAT? Most mobile providers do use CGNAT and duckdns won’t work on that. Do they give you a real IPv6 address?
There is no solution with CGNAT except IPv6. You could take a look at the new ZeroTier addon in the community repo but I have not got that working yet.