OK - any suggestions for the names of API attributes? The PDF[0] shared does not specify the names of the attributes, so I had two ideas for the names of the two new attributes being added to the Subnet resource: Either prefix them with "ipv6" * ipv6_ra_mode * ipv6_address_mode Or don't prefix them: * ra_mode * address_mode Thoughts? [0]: https://www.dropbox.com/s/rq8xmbruqthef38/IPv6%20Two%20Modes%20v2.0.pdf -- Sean M. Collins