Why neutron doesn't allocate IPs sequentaly

Solution Verified - Updated -

Issue

Before RHOSP 10 (upstream newton release) neutron allocated IP addresses sequentially. This article was written to answer the following questions:

  • Why neutron allocates IPs for its ports out of order?
  • Is it possible to change this behaviour?
  • Can show the relevant code?

Environment

  • Red Hat OpenStack Platform 10
  • Red Hat OpenStack Platform 13
  • Red Hat OpenStack Platform 14

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