When I was experimenting with IPv6 on my lan, router advertisements indeed worked great! But the big loss was that I had no control to reserve a particular IPv

When I was experimenting with IPv6 on my lan, router advertisements indeed worked great! But the big loss was that I had no control to reserve a particular IPv6 address for a particular MAC address inside the DHCP server, or assign DNS names automatically, etc. since it's basically 1 way - device receives a RA then configures itself with a random address.