Am 23.10.19 um 15:26 schrieb Fernando Gont:
It's worse than that: Most IPv4 CPE devices have UPnP support, but IPv6 ones often lack the hooks to punch holes into the fw. SO at the end of the day you get better end-to-end connectivity with IPv4 than with IPv6
That assumes you have at least a public ipv4 address at your home router. A a lot of people (in Germany) cannot fulfill this requirement. Some of them hope/pray for pcp instead of UPnP. (good luck) On the other hand, despite most home routers have a simple firewall - people may change their routers. And cheap router may get an software update, as they got it in former time for dyndns and port forwarding... -- There’s no place like ::1 Thomas Schäfer (Systemverwaltung) Ludwig-Maximilians-Universität Centrum für Informations- und Sprachverarbeitung Oettingenstraße 67 Raum C109 80538 München ☎ +49/89/2180-9706 ℻ +49/89/2180-9701