Wireguard Protocol: Problems with Vodafone - How it works (Nordlynx)
Wenn du einen Kabelanschluss von Vodafone, Unitymedia oder eazy hast können damit oftmals keine Seiten geladen werden können, sobald Wireguard/NordLynx als VPN Protokoll eingestellt ist. Die Probleme in Verbindung mit Vodafone Kabel und Wireguard/Nordlynx ist bei NordVPN bekannt. Der VPN provider äußerte sich auf mein Nachfragen wie folgt dazu:
"Vodafone blocks Wireguard/NordLynx connections."
Feedback from support on the question why Nordlynx could not be set up for me
Fix problems in connection with Vodafone cable and Wireguard/Nordlynx: It is due to your internet protocol, which must be dual stack
Especially in Germany, cable operators often use the DS-Lite (Dual-Stack Lite) mechanism, which is not compatible with Wireguard/Nordlynx.
The reason for the non-functioning Nordlynx is therefore the Internet protocol used by the provider. There is a trick how you can activate Nordlynx even with a cable connection from Vodafone, Unitymedia or eazy.

To fix the problem, contact the support and ask them to your connection on dual stack to switch. If you have a tariff with 250Mbit or faster, the switch from Dual Stack Lite-Lite to Dual Stack is free. For the cheaper tariffs you have to activate the option Upload booster or Comfort telephony with costs book