When do dynamic IPv6 addresses for Azure load balancer front-end configurations change?

Question

I need a static ip address for IPv6 on Azure, but it looks like only dynamic IPv6 addresses are supported. I'm wondering about the relative stability of a dynamic IPv6 address for Azure load balancers. How often will it change?

In the Azure Docs, it says that dynamic ip addresses for VMs change when the vm is restarted, stopped, or deallocated. How does this work for load balancers, since they are not restarted or stopped?

If I have a load balancer with an availability set of vms as a backend pool, will the public IPv6 front-end ip configuration be relatively stable even if it's technically "dynamic", as long as I don't change the backend pool?

Answer 1

I'm wondering about the relative stability of a dynamic IPv6 address for Azure load balancers. How often will it change?

For now, IPv6 allocation static method are not supported.

Any unreserved IP address(IPv4 and IPv6) will remain static if you:
1.Don't delete the public IP object associated with the load balancer.
2.Maintain at least 1 VM in the backend pool.

So, if we don't delete public IP address or disassociate it, and keep a VM running in the backend pool, we will keep the Public IPv6 address(will not change).