For regional external passthrough Network Load Balancers, you can reserve specific or automatically allocated bring...

For regional external passthrough Network Load Balancers, you can reserve specific or automatically allocated bring your own IP (BYOIP) IPv6 addresses before creating a load balancer, so that the IPv6 address persists independently of the load balancer's lifecycle. You can also promote an ephemeral BYOIP IPv6 address that is in use by a load balancer to a reserved static IP address.

For more information, see the following documentation:

• Set up a regional external passthrough Network Load Balancer with a backend service. • Set up a regional external passthrough Network Load Balancer for multiple IP protocols • Set up a regional external passthrough Network Load Balancer with zonal NEGs

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