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[Weaver]

[meritez]

AQL offer a Ripe IPv6 traning course:
https://portal.aql.com/ripeipv6/

I'd blame Three UK with their excessive use of CGNAT.

[Alex Atkin UK]

I'd blame Three UK with their excessive use of CGNAT.

They don't use CG-NAT on their 3internet home broadband APN, AFAIK the only provider who doesn't.

That APN does seem more prone to congestion however than the CG-NAT three.co.uk one.

However, AAISP L2TP runs absolutely fine over both, including IPv6.

I don't have my 5G router in Bridge Mode even, as I like being able to connect to its WiFi to test port forwarding and my VPN are working.  Plus if my pfSense box messes up, I have an easy way to immediately get back online. (I only have PAYG on my phone given I rarely use its data connection and calls are cheaper over VoIP)

[Weaver]

But do you see my point? How is it even possible to refuse to handle IPv6? Given that PPP is just PPP. (Apart from the protocol-specific features of PPP, the NCPs and maybe the login process.)

[Alex Atkin UK]

Its more fundamental than that as is it actually PPP or are they using L2TP (which is more or less PPP)?  I don't understand how plain PPP could work over a mobile network, unless AAISP have their own APN?  Which would make no sense that its less functional than using L2TP over Threes own network.

[Weaver]

The APN default works, or you specify m2m.aql.net

[Alex Atkin UK]

Then I'd think its actually using L2TP, which as I understand it is PPP to a specific IP address, rather than normal PPP that just expects a response from a blind broadcast over the network.  As IPv6 works fine over L2TP over a normal Three service, it is indeed odd.