HIPRG met on 17 November 2011 at IETF 82 in Taipei 9-11:30. Andrei Gurtov chaired the meeting; co-chair Tom Henderson was not able to attend. Roughly 30 people attended.

1) HIPRG document status (Andrei Gurtov)
HIPRG experiments and DHT drafts have reached final revisions. The proxy draft is set to be done soon. The drafts on revocation and rfid require further work.

Lars Eggert: DHT draft requires addressing of comments (see mailing list). It is not en par with experiments draft yet.

Lars: HIP DEX should be moved to IETF to support Bob's effort in IEEE.
 
Discussion on further directions of HIPRG.

Lars: HIPRG work should be on innovative research.

2) HIP DEX presentation (Bob Moskowitz)
    -- http://tools.ietf.org/id/draft-moskowitz-hip-rg-dex-05.txt

Bob Moskowitz goes through the slides. He mentions that IEEE 802.11ae will support HIP DEX as a lightweight solution for fast authentication. He asks for support with his efforts (6LowPAN, 802.11ae, ...).

Zin Zoang: Core has not yet decided on KMP, could be DTLS, IKE or other lightweight mechanisms.

3) 3GPP EPC presentation (Zoltan Laszlo)
Zoltan Laszlo presents the proposed basic architectural changes.

Lars: This work should be presented in 3GPP, not in HIPRG.
Zoltan: Our work requires changes in HIP as well.
Lars: If this does not have any traction within 3GPP, then there is no need to standardize this in IRTF/IETF.

Zoltan presents HIP DEX-based re-authentication for AKA on behalf of Jani Pellikka.

Lars: Which is the base line for the comparison of your results?
Zoltan: IKEv2 EAP-SIM for CPU load.

Zoltan presents HIP signaling delegation services.

Lars: Do you still use HIP for end-to-end authentication?
Zoltan: No.
Lars: So, is HIP the right protocol for the use case?
Zoltan: We require mobility support. Suitability of HIP is still an open research question.
Bob: HIP may become a secure command channel.
Lars: So, HIP may be used as a secure signaling protocol as opposed to its original end-to-end properties.
Bob: Yes. HIP provides a lightweight secure channel.

Lars: The exact problem that is solved here is unclear. Does the solution fix the problem?

4) draft-heer-hip-middle-auth presentation and WLAN roaming project update (Rene Hummen)
   -- http://tools.ietf.org/id/draft-heer-hip-middle-auth-04.txt

Rene presents the latest changes since draft-heer-hip-middle-auth-02. The draft now supports authentication of HIP BEX, UPDATE, and CLOSE exchanges by middleboxes. The updated design furthermore decreases the computational load on the end-hosts. He also presents preliminary results of the WLAN roaming project Mobile ACcess that uses HIP for mobility support and authentication. Rene announces a new release of HIPL.

5) Hierarchical HIP and proxies updates (Dacheng Zhang)
Dacheng goes through the slides presenting RANGI.

Lars: What is the problem that you want to solve?
Dacheng: E.g., aggregatability of HITs for ACLs.

6) HIP deployment study results (Ari Keranen)
Ari goes through the slides. 

Lars suggests to focus on the niche markets (data centers, and M2M applications) where incremental deployment does not matter. He also believes that the available source code is stable enough that it has production quality. 

7) HIP RFID (Gyu Myoung)
   -- http://tools.ietf.org/id/draft-irtf-hiprg-rfid-04.txt

Gyu presents an updated HIP support for RFIDs on behalf of Pascal Urien.

Hannes: What is the implication of HIP for RFID?
Gyu: It provides an ID.

Bob: This requires better alignment with 802.15.4f.
Lars: Bob, do you see IEEE referencing this document? If yes, this should be moved to HIP WG.
Bob: Yes, within 6 months.

8) Multipath HIP

Andrei showed a slide comparing multipath HIP throughput to MPTCP. Lars noted that poor performance of MPTCP is explained by implementation issues.