Wed Sep 08, 2021 8:18 am
Out of nowhere the VPN connection via L2TP/IPSec from WLAN is working again - I use the IPSec feature from L2TP server.
Via LTE it does not and the difference is:
When I connect from WLAN the iPhone has the IPv4 address of the Router and no IPv6 address.
Via LTE it has an IPv6 address and an IPv4 address and this is the only obvious difference I can see.
It connects with its IPv4 address in both cases but it seems packets are not reaching the iPhone when I connect via LTE.
If this was just a provider issue, it should have caused much more noise and i couldn’t connect to the LiSS 3000 i mentioned above.