Sorry Frog but what exactly is L2TP and also what is AAISP.
AAISP, (Andrews & Arnold ISP) is consistently the highest rated in the country on sites that look beyond the big four. For instance, this site's
This AAISP L2TP page
will help you. In particular:-
We offer a service to allow you to make use of our Internet Access service but without having a broadband line from us!
The service uses a standard system called Layer Two Tunnelling Protocol (L2TP) which allows you (using suitable s/w or equipment) to connect to us via another Internet Access service, and via that, to make use of our service.
Not all ISPs are equal, and A&A customers find our service very useful. We have many features that people appreciate including fixed IPv4, a block of IPv6, no censorship or monitoring. A good technical support team. Good peering and connectivity. And simply the right attitude to privacy and human rights.
Some technical issues you may encounter with other ISPs include dynamic IP or blocking of incoming ports; making it hard or impossible to run servers on your connection; or worse still Carrier Grade NAT (where there are extra layers of NAT within your ISP). Our service can allow these issues to be bypassed.
Using this service allows people to use us as their ISP via another ISP. Sadly, this does not fix congestion and speed issues in the other ISP, but it can address many other issues.
As you can see, they specifically say it bypasses the problem you have with EE CGNAT.
Edit: I posted jchamier's link again to avoid you needing to jump around, and was drafting this post before woodmass's latest was present.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. 200GB. Sync 01/10/18 - 71908/13506Kbps @ 600m. BQMs - IPv4
If you never think of anything off the wall, you'll never think of anything original.
Edited by RobertoS (Sat 13-Oct-18 14:07:23)