NAT type unfriendly

[kfat32]

trying to figure out why getting NAT type unfriendly on t-mobile connection. 

Thanks in advance for your help.

[GreenMan]

There's a good chance your mobile data carrier is using CG-NAT.   Does it cause you practical difficulties - e.g. trouble forming AutoVN tunnels?  If so, look to configure manual NAT traversal on your destination Hub MX.

https://documentation.meraki.com/General_Administration/Service_Providers_-_SPs/Carrier-Grade_NAT_an...

[Brash]

Adding to what @GreenMan said, you can verify if you're behing CG-NAT by checking your IP address provided by the carrier.

CG-NAT 'public' IP addresses will be in the range of 100.64.0.0 to 100.127.255.255 

[FabianSchleef]

Hi,

you can also check if your carrier provides another APN that‘s not behind a CG-NAT and change your cellular gateway to it.

This way you don‘t need to configure any manual NAT traversal rules.