Minutes for PCP at interim-2014-pcp-1
minutes-interim-2014-pcp-1-1

PCP Interim Meeting

7:00 PDT Tuesday 26 August 2014

7:06 PDT Tuesday 26 August 2014
Chairs Slides
<http://www.ietf.org/proceedings/interim/2014/08/26/pcp/slides/slides-interim-2014-pcp-1-4.pdf>

Three documents published:
– pcp-description-option → RFC 7220
– pcp-nat64-prefix64 → RFC 7225
– draft-ietf-pcp-dhcp → RFC 7291

Will be going to IESG shortly:
– pcp-server-selection (see next slide)

– pcp-port-set (on agenda)
Simon Perreault explained recent changes

Perhaps improve text explaining need for “First Internal Port”

Modify text to say “PREFER_FAILURE MUST NOT appear with PORT_SET”

Discussion about whether a reply for a port set of size one should omit the
PORT_SET Option.

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7:40 PDT Tuesday 26 August 2014

PCP Authentication Mechanism
draft-ietf-pcp-authentication
Dacheng Zhang
<http://www.ietf.org/proceedings/interim/2014/08/26/pcp/slides/slides-interim-2014-pcp-1-1.pdf>

Discussion of ID-indicator option
Is it arbitrary 8-bit data? UTF-8 text?
Is the “client” that decides which credentials to present a human, or software?

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8:00 PDT Tuesday 26 August 2014
Optimizing NAT and Firewall Keepalives
draft-ietf-pcp-optimize-keepalives
Tiru Reddy
<http://www.ietf.org/proceedings/interim/2014/08/26/pcp/slides/slides-interim-2014-pcp-1-5.pdf>

Discussion of how PCP Proxy capability in PCP servers would save the client
having to discover and communicate with every NAT and Firewall on the path.

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8:05 PDT Tuesday 26 August 2014
PCP Tunnel-ID Option
draft-ripke-pcp-tunnel-id-option
Andreas Ripke (10 mins)
<http://www.ietf.org/proceedings/interim/2014/08/26/pcp/slides/slides-interim-2014-pcp-1-2.pdf>

Stuart Cheshire: Examples of actual real-world usage of subscriber portals for
PCP port allocation would help motivate this

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8:24 PDT Tuesday 26 August 2014
Flow high availability through PCP
draft-vinapamula-flow-ha
Suresh Vinapamula (10 mins)
<http://www.ietf.org/proceedings/interim/2014/08/26/pcp/slides/slides-interim-2014-pcp-1-3.pdf>

What does PREFER_FAILURE do?
Is it a being used to signal TRY_HARDER?
Yes.
Perhaps a priority level field in the option would signal this better.

Add mention in Security Considerations that this may give a hint to MITM
attackers about which flows might be worth attacking.

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8:40 PDT Tuesday 26 August 2014
(U)SIM based PCP authentication
draft-chen-pcp-authentication-sim
Gang Chen (10 mins)
<http://www.ietf.org/proceedings/interim/2014/08/26/pcp/slides/slides-interim-2014-pcp-1-6.pdf>

Dave Thaler: Does this affect the base authentication document?
If so, we need to address that before the base authentication document is
published.

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8:54 PDT Tuesday 26 August 2014
PCP Extensions for Footprint Discovery
(no draft)
Brent Hirschman (10 mins)
<http://www.ietf.org/proceedings/interim/2014/08/26/pcp/slides/slides-interim-2014-pcp-1-0.pdf>
Dave Thaler: Next step would be to submit an Internet Draft describing the
problem statement and proposed solution and start discussions on the mailing
list.

9:08 PDT Tuesday 26 August 2014
Meeting end