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[Bug 1543656] [NEW] Cannot connect a router to overlapping subnets with address scopes

 

Public bug reported:

This is a known limitation in the reference implementation of address
scopes [1] in the L3 agent that a router cannot be connected to subnets
with overlapping IPs even when the subnets are in different address
scopes and, in theory, there should be no ambiguity.  This was
documented in the devref [2].  I'm filing this bug to capture ideas for
possibly eliminating this limitation in the future.

[1] https://review.openstack.org/#/c/270001/
[2] http://docs.openstack.org/developer/neutron/devref/address_scopes.html#address-scopes

** Affects: neutron
     Importance: Wishlist
         Status: Confirmed


** Tags: address-scopes l3-ipam-dhcp

** Tags added: address-scopes l3-ipam-dhcp

** Changed in: neutron
   Importance: Undecided => Wishlist

** Changed in: neutron
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1543656

Title:
  Cannot connect a router to overlapping subnets with address scopes

Status in neutron:
  Confirmed

Bug description:
  This is a known limitation in the reference implementation of address
  scopes [1] in the L3 agent that a router cannot be connected to
  subnets with overlapping IPs even when the subnets are in different
  address scopes and, in theory, there should be no ambiguity.  This was
  documented in the devref [2].  I'm filing this bug to capture ideas
  for possibly eliminating this limitation in the future.

  [1] https://review.openstack.org/#/c/270001/
  [2] http://docs.openstack.org/developer/neutron/devref/address_scopes.html#address-scopes

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