On the client side, using Mikrotik can be done with Wireguard if on RouterOS v7.  Use an AP as a client to the Cellular Hotspot and build Wireguard tunnel back to “VPN Concentrator” somewhere.

Of course would require someone on remote end to have public IP to terminate tunnel and route the 44net subnet allocation.

I have done this, but both ends of tunnel and subnet allocation are all in my control.  If interested, I can go more in depth.

> On Feb 13, 2023, at 12:21 PM, Kris Kirby via 44net <44net@mailman.ampr.org> wrote:
>
>> I don't think this is possible with a hotspot from a cellular
>> connection.
>>
>> You are behind a nat on cellular, which shares one public IP with many
>> and doesn't allow routable ports/protocols.
>>
>> The only solution would be to get a public IP address from a home
>> connection or a vps, and setup a VPN to access it from remote.
>>
>> I could be wrong, but that is my understanding at this point.
>
> Not only that, but some VPSs do not allow loading the IPIP module, which
> means that a full KVM virtualized private server is the only solution
> short of setting up a VPS to announce a /24 via BGP.
>
> --
> Kris Kirby, KE4AHR
> Disinformation Architect, Systems Mangler, & Network Mismanager_______________________________________________
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