how does Yggdrasil work if ipv6 is dead?
Yggdrasil uses exclusively IPv6 for routing on its own overlay network, but not on the Internet. See https://yggdrasil-network.github.io/faq.html#does-yggdrasil-...
It forms its own IPv6 network separate from the internet. It can peer over any IPv4 or IPv6 network, including the internet, LAN, or PTP.
Yggdrasil uses exclusively IPv6 for routing on its own overlay network, but not on the Internet. See https://yggdrasil-network.github.io/faq.html#does-yggdrasil-...