In the area of Vodafone Deutschland GmbH you can get a publicly accessible IPv4 address in the private customer area exclusively with your own device (cable modem & router or cable router / Fritzbox Cable) or you can switch the cable router to bridge mode and connect your own router to LAN1. With the 2nd option (bridge mode) you are then on the road with IPv4 only.
You will get the publicly accessible IPv4 address as written in my previous post - either you activate your own device, then you can choose whether you use IPv4 only, dual stack or DS lite or you put the Vodafone station in bridge mode and receive it on the downstream router IPv4 only.
