f7e1739d9b
Currently, both netd and clatd do NAT64 prefix detection, and we start clatd on all IPv6-only networks regardless of whether netd has detected a NAT64 prefix or not. Instead, track the NAT64 prefix in the framework, and only start clatd if the prefix is detected. This will allow us to remove DNS64 detection in clatd, and pass the NAT64 prefix and the IPv6 address to clatd on the command line instead of clatd finding it itself. That way, netd and the framework will always know how 464xlat is configured, and we'll be able to use that information in netd. Test: builds, boots Test: atest FrameworksNetTests Change-Id: Ida32d5760c5aecf7aeebef08fdb596291b2ce14a