Auto-configuring IPv6 transition mechanisms on customer devices

Are there any (draft, standard, or otherwise) defined mechanisms for indicating to customer-provided devices that they should configure IPv6 to IPv4 transition mechanisms such as MAP, 4rd, 464XLAT, etc. and providing the configuration details thereof? I'm not aware of any. It seems like this is something that, if defined, would make deployment of such mechanisms a lot easier even if SPs provide the customer edge router that implements said mechanisms. I guess they'd probably be implemented as extensions to DHCPv6 or similar or embedded in RAs (the latter seems ugly). -- Brandon Martin