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Have EE changed their 4G Carrier NAT settings recently?

Hi All

I'm using the 4G/LTE mobile broadband service from EE, through a Huawei B593s-22 router. I've just noticed that recently (perhaps in the last 3 to 5 days) that my external 'public' IP address, as seen via the router web interface, now matches exactly the IP address reported by the likes of whatsmyip.org at 31.107.xxx.yyy

Previously the 'public' IP address being reported was 213.205.xxx.yyy and this was completely different to the external IP being reported by the router interface (I can't recall the address exactly).

So does this indicate EE have/are changing their carrier NAT/double NAT policy? Am I getting all excited over nought??

Before anyone else gets too excited I still can't seem to get port forwarding to work!!
 
Interesting - I'll investigate ours and get back to you. We currently use a third party VPN to get us a fixed IP and to get around the CGNAT issues which break everything.
 
Interesting - I'll investigate ours and get back to you. We currently use a third party VPN to get us a fixed IP and to get around the CGNAT issues which break everything.

Can you tell me more about your third party VPN?

I've been looking into various options such as fixed IP address 4G SIM cards from third parties like Comms365, but they are *expensive*.
 
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This gets weirder....

Ok so checked again this morning and LTE router is now reporting public IP as 100.94.xxx.yyy and the actual public IP address reported back by whatsmyip.org has gone back to 213.205.xxx.yyy

The previous 31.107.xxx.yyy public address I had on the router and 'publicly' on the internet looked to be owned by RIPE and was showing up in central London??

Who knows all this CGNAT is a mystery....
 
CGNAT basically breaks lots of things and is to be avoided. Except you can't avoid it with EE. It never used to have that on Three.

I started out with Astrill which collapsed completely some months back - just horrifically oversubscribed.

I set up my own VPN using a cheap server at a data centre. This gave me full throughput even with only a 100 Meg port since the connection can't hit 100 Meg anyway, only half of that.

I managed to break this when I tried configuring reverse forwarding and fell back to VPN UK which was fine, but it's not a 1:1 service, it is contended. So at times when routing through this, 50 Meg up and down can be reduced to only e.g. 23 Meg or 37 Meg or whatever.

I had planned on getting my own VPN box working again but since we're planning on moving, I put that on hold.
 
I've got a couple of Juniper SRX boxes that I can use for this. I just need to devote some seat time to get the VPN and split tunnels configured using the Juniper devices.
 
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