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[Bernard Cafarelli <1824477@xxxxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1824477

Title:
  dhcp: need to reorder classless static route record

Status in neutron:
  Fix Released

Bug description:
  Dear colleagues,

  if there are Subnet1 with Host1 and Subnet2 with Host2 and Host2 serves Network2 behind it, in order to reach Network2 it is required to add Network2 to Subnet1's host_routes with Host2 as a
  nexthop. In this case Neutron will offer in Subnet1 the following set of RFC3442 routes:

  Network2 -> Host2
  Subnet2_cidr -> 0.0.0.0

  which will lead to fail installing Network2 route on the Host1 since
  at the moment of Network2's appearance there is no information about
  Subnet2 route.

  I've submitted for review the patch, which orders routes in such a way
  that 'connected' routes (0.0.0.0) will be placed first and, thus, all
  subsequent routes will be installed successfully.

  https://review.openstack.org/#/c/651994/

  Thank you.

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