Is there any way to enable IPv6 on an existing IPv4 only subnet on a GCP VPC without rewiring everything? Currently facing an issue in production where I'm unable to reach external IPv6 resources (Firebase) because we are not on a dual-stack subnet.
Any advice or tips would be great. Looking to minimize changes to infrastructure and avoid any service disruption.
As you said To enable IPv6 on an existing IPv4 only subnet on a GCP and you are not using dual-stack subnet
Install NAT64 for your Problem
NAT64 is an IPv6 transition mechanism that facilitates communication between IPv6 and IPv4 hosts by using a form of network address translation (NAT). The NAT64 gateway is a translator between IPv4 and IPv6 protocols,1 for which function it needs at least one IPv4 address and an IPv6 network segment comprising a 32-bit address space.
Refer to a global IPv6 address be NAT'd to an internal IPv4 address at a firewall-level for more information.
