I'm the dnsdir reviewer for this I-D.

The draft has no significant DNS content: ie nothing that raises operational or protocol concerns for the DNS. From that perspective, the I-D is ready.

Overall, the I-D is clear and well written. There are a couple of nits though:

1) "Behaviors" is a non-word that annoys me. There is no reason to pluralise behaviour (or even behavior).

2) The sentence beginning "Receiving a DNS response for a ULA destination..." in Section 8 is clumsy and should be restructured.