I have an Azure App Service which I limit access by IP using the Networking Access restrictions. The Access restrictions were working without an issue until March 25th 2021. Since then I am no longer able to access the App Service from an Azure Virtual Machine with a static IP Address. The rejected IP Addresses found under Configuration and Management shows a new IPv6 Address that I believe is the Virtual Machine. Adding the IPv6 address does not resolve my 403 error and the virtual machine is still unable to access the Web API.
I've tried adding the AzureCloud Service Tag as well hoping the VM would be include under that umbrella but had no luck.