MIPv6 bootstrapping in split scenario

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Dallas, March 2006
IETF 65th mip6 WG
Mobile IPv6 bootstrapping
in split scenario (draft-ietf-mip6-bootstrapping
-split-02)
Gerardo Giaretta James Kempf Vijay Devarapalli
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Status Update

• WGLC last December
• New I-D available after WGLC
• editorial issues solved
• consensus on Proxy DAD on HoA the HA checks the
  uniqueness of the HoA, but the draft does not
  require it to perform DAD
• issue on USE_ASSIGNED_HoA attribute solved
  (rejected)
• There are still two technical open issues

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Issue USE_ASSIGNED_HoA attribute

• The draft specifies a new IKEv2 Notify Nessage
  Type (USE_ASSIGNED_HOA) in case the MN tries to
  perform HoA auto-configuration but it is not
  allowed
• Proposal during WGLC
• the HA may raise a FAILED_CP_REQUIRED instead
  using USE_ASSIGNED_HoA
• Issue rejected and closed
• the FAILED_CP_REQUIRED attribute does not have
  any information about what is wrong

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Open issue DNS Update

• Current solution specified in the WG draft
• MN includes a new mobility option, the DNS Update
  option
• HA performs DNS update on behalf of the MN using
  the HoA previously allocated and the FQDN
  provided by the MN in the DNS Update option

• DNS Update mobility option
• R flag used to request the removal of DNS entry
• separate Status namespace for DNS update

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Open issue DNS Update (contd)

• Some concerns raised during WGLC
• standard rule is to update only where you are
  trusted so the MN should update the direct DNS
  and the HA the reverse DNS
• This would require establishing trust between
  each MN and the DNS server. HA updating the DNS
  entry is easier
• the update should be a consequence of the
  allocation of the address, not of the home
  registration and thus the reverse update should
  be performed by the IKEv2 code
• This would disallow a MN from specifiying which
  home address it wants to appear in the DNS server
• No consensus to make the changes
• Sticking to the current solution in the draft
• DNS expert review requested

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Open issue MIP6_HOME_PREFIX attr.

• The draft specifies the MIP6_HOME_PREFIX
  configuration attribute in order to send Home
  Prefix to the MN
• used for HoA auto-configuration
• the WG draft currently proposes that only one
  prefix is advertised
• proposals to have a broader CFG option, having
  the HA sending to the MN several prefixes
• we still have MPD for that
• IKEv2 CFG shouldnt be a replacement for a router
  advertisement
• No consensus
• IKEv2/IPsec expert review requested

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Next Steps

• Authors have requested that the WG chairs arrange
  for expert review on the draft prior to
  submission to the IESG
• DNS expert review for DNS update issue
• IKEv2 expert review for MIP6_HOME_PREFIX
  attribute issue
• If these reviews will imply significant changes
  to the draft there will be another WGLC