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[Joe Gordon <1022612@xxxxxxxxxxxxxxxxxx>]

** Changed in: nova
       Status: Incomplete => Opinion

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https://bugs.launchpad.net/bugs/1022612

Title:
  private instance IPs can only reach public IPs in other regions, not
  the same region

Status in OpenStack Compute (Nova):
  Opinion
Status in nova package in Ubuntu:
  Confirmed

Bug description:
  Take three instances in two regions (A and B) such that they are named
  A1, A2, and B1.  A1 is the only instance with a public IP: A2 and B1
  only have the standard private IPs they were given.  In this
  situation:

    A1 can reach both of its own interfaces.
    B1 can reach A1's public IP, but not its private IP.
    A2 can reach A1's private IP, but not its public IP.  

  This last line is counter-intuitive, as B1 can reach A1's public IP
  just fine.  In fact, if we bring a public IP up on B1, A2 can reach
  B1's public IP without trouble.

  Traceroutes halt right out of the gate, which may or may not indicate
  that this is enforced by nova-network itself.

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