Hi all,
I need to use IP Cloud as DDNS supplier but unfortunately my RB4011iGS+ is pulling a wrong Public IP Address.
I have exactly the same configuration at another site (same router and same ISP) and it works perfectly there.
Just don’t understand what wrong I’m doing.
Check the screenshot below:
Public IP in route list = 100.76.XXX.XXX
Public IP in IP/Cloud = 178.238.XXX.XXX
FYI, I’ve already tried to deactivate/reactivate IP Cloud, update the router, reboot the router…
tl’dr: It works as expected because your router is behind CGNAT - https://datatracker.ietf.org/doc/html/rfc6598
****in the
/ip route
section, you don’t see a public IP. You see WAN IP of your router, which may or may not be routable from the public internet. Many ISP nowadays put clients behind a NAT, which means you don’t have your own public IP. Typically you will see either one of RFC1918 or a CGNAT addresses. Thats because public IP aren’t actually free even for ISPs and this is even harder for new companies who don’t have large blocks from many years ago when there was plenty of supply. Your router clearly falls into this category. Due to the CGNAT you will never be able to reach your router from the internet and use it for e.g. VPN server or port-forwarding.
Or in simple words, bad news, you don’t really have public address on your router, the 100.76.XXX.XXX is non-public, similar to 192.168.x.x, etc.
Address space starting from 100.x.y.z is called CG-Nat and it is not a Public IP address…
Do you use any mangle rules ?
Is that the first router connected to your ISP ?
That is not exactly correct. CGNAT is only it is only 100.64.y.z - 100.127.y.z (or precisely 100.64/10 in the CIDR notation)
e.g. 100.128.1.1 is perfectly valid public IP which belongs to T-mobile in USA
You 're right …
The title of the thread should read.
I DONT KNOW WHAT KIND OF ISP CONNECTION I HAVE.