DVR fip namespace is not able to pick the default gateway after reboot

Solution Verified - Updated -

Issue

  • Why DVR fip namespace is not able to pick the default gateway after reboot?
  • After compute node reboot, instances running on compute node are reachable using floating ip from within a same subnet but not reachable from another subnet.
  • Why instances are not reachable using floating ip address after compute node reboot?

Environment

  • Red Hat OpenStack Platform 10.0
  • DVR (Distributed Virtual Routing)
  • Neutron Packages shipped before openstack-neutron-9.2.0-13.el7ost.

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