It does make the problem go away. You no longer need to traverse NAT which is what things like Bore and STUN/TURN/ICE do. With IPv6 every device has a public address you don’t really get a choice. Even for IPv4 NAT was an accident and it doesn't protect you from anything, the firewall via contrack does and the firewall still exists in IPv6. If Bore was just “firewall configuration for lazy people” then there are ways that don’t involve a remote server. You can just speak UPnP for instance.