NDProxy Status Update draft-thaler-ipv6-ndproxy-01.txt

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NDProxy Status Updatedraft-thaler-ipv6-ndproxy-01
.txt

• Dave Thaler
• Mohit Talwar
• Chirayu Patel (new co-author)

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Scope is Two Scenarios
A
Access Point
rest of network
local hosts
Wireless link
Ethernet
A
Router
rest of network
local hosts
PPP link
Ethernet
when A can not obtain a delegated prefix GOAL
remove incentive to NAT in IPv6
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Technical Issues List http//www.icir.org/dthaler
/NDProxyIssues.htm
Description Submitter
1 Missing details on STP over non-802 media Erik Nordmark
2 Make STP optional Pekka Savola
3 Add requirements Chirayu Patel
4 Dont require an IP address Chirayu Patel
5 Dont modify Override bit Dave Thaler
6 Flood unicast packets if no cache entry Chirayu Patel
7 Supporting segments with differing MTUs Chirayu Patel
8 Make Informational not Standards Track Brian Carpenter
9 Structure of neighbor cache Chirayu Patel
Key Done in -01, Proposed reject, Needs more
input (apologies to the color-blind)
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Items done in draft -01

• 1. Missing details on STP over non-802 media
• Specify sent in IPv6 header to a well-known
  link-scoped multicast address (requires address
  and NextHeader value)
• 2. Make STP optional
• Done, including text as to when its useful and
  when its not
• 3. Add requirements
• Allow dynamic addition/removal of a proxy
  without adversely disrupting the network.
• The proxy behavior should not break any existing
  classic bridges in use on a network segment.
• 5. Dont modify Override bit
• Slows down convergence, and not needed if
  loop-free
• Removed text about modifying it
• 7. Supporting segments with differing MTUs
  (scenario 2)
• Added text about checking/adding MTU option in RA

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8. Make Informational not Stds Trck

• Summary of issue raised
• ARP proxies are a kludge
• May be hard to publish a watertight spec
• But definitely a market for these devices
• Proposed resolution Accept
• May require a charter update if WG adopts this
  document to fulfill the goal
• Jul 03 Submit Proxy RA to IESG for Proposed
  Standard.

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Other issues

• 4. Dont require an IP address
• Proposal Reject (assume NDproxy is IPv6 Node)
• 9. Dont require a full neighbor cache
  implementation
• Proposal Reject (assume NDproxy is IPv6 Node)
• 6. Flood unicast packets if no cache entry
• Proposal Discuss
• Next steps WG doc?