Sorry for being late.
the command: curl -4 https://ifconfig.co
returns the 189.x.x.x
"Does your ISP employ carrier grade NAT perhaps?" I don't know, the ISP have some odd configuration for sure, as this is the first time i have this problem. Anyways, the IP on the interface is a valid internet IP and is the one i can access from outside and send to the no-ip service, if i can just make the dyndns pluggin send it instead of auto-resolve would solve the problem.
the command: curl -4 https://ifconfig.co
returns the 189.x.x.x
"Does your ISP employ carrier grade NAT perhaps?" I don't know, the ISP have some odd configuration for sure, as this is the first time i have this problem. Anyways, the IP on the interface is a valid internet IP and is the one i can access from outside and send to the no-ip service, if i can just make the dyndns pluggin send it instead of auto-resolve would solve the problem.