https://azure.github.io/AppService/2024/06/01/Announcing-Inbound-IPv6-support.html
🤷
Seems to be progress.
Announcing inbound IPv6 support in public preview
I am happy to announce the first part of our IPv6 implementation in App Service. Public preview of inbound IPv6 support for multi-tenant apps on Premium SKUs, Functions Consumption, Functions Elastic Premium, and Logic Apps Standard. We’ll be adding IPv6 support in four stages.