Authors,



I was appoited to do Int-Dir review of draft-ietf-hip-rfc5203-bis-09. 


You should treat these comments as any Last Call comments.




I found the document well written and got only few clarifying questions.

* In Section 4.1. the lifetime calculation does not actually define
  whether integer or floating point math is used. Depending on these
  or the lack of rounding guidance the lifetimes may end up to very
  different numbers.

* Section 5. should probably have some text describing what happens
  if the certificate used to authz the service expires or gets
  revocated during the registration lifetime. Specifically what the
  registrar is supposed to do.

Some obvious IDnits:

  == Outdated reference: A later version (-05) exists of
     draft-ietf-hip-rfc6253-bis-02

  == Outdated reference: A later version (-09) exists of
     draft-ietf-hip-native-nat-traversal-08

- Jouni