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[Hong Hui Xiao <xiaohhui@xxxxxxxxxx>]

*** This bug is a duplicate of bug 1554825 ***
    https://bugs.launchpad.net/bugs/1554825

I am going to close this bug, because the behavior in the description

"After dhcp agent reboot the route to qdhcp is removed from
/var/lib/neutron/dhcp/XYZ/opts and router will handle metadata."

is fixed by this bug: bug 1554825.

With the patch in that bug, when router interface is added/deleted, the
dhcp agent will update the route of metadata service. So, no need to
restart the dhcp agent now, the router will take/leave metadata service.


** This bug has been marked a duplicate of bug 1554825
   Cached network object in DHCP agent not updated with router interface changes

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https://bugs.launchpad.net/bugs/1549860

Title:
  neutron metadata- after adding a network port to a neutron router,
  static route is still sent to new VMs

Status in neutron:
  Confirmed

Bug description:
   Metaadata isolated configured. Network and subnet created - ( no --no-gateway option but the network is not connected to a router - there is no router). VM booted - metadata is OK and we have a static route passed to the VM. 
  Created a router and attached a network port to it ( same network) . Created a new VM and still qdhcp will handle the metadata even though we have the network configured with DG ( /var/lib/neutron/dhcp/XYZ/opts has a static route for 169.254.169.254 and passes it to the  new VMs- This is OK ONLY before we added the network to the router) .  After dhcp agent reboot the route to qdhcp is removed from /var/lib/neutron/dhcp/XYZ/opts and router will handle metadata.

  
  I strongly believe that if we made no change in the dhcp-agent.ini file, agent restart ( systemctl restart neutron-dhcp-agent) should not affect behavior in any way. 

  Additionally, 
  The static route should be removed from /var/lib/neutron/dhcp/XYZ/opts right after the network "XYZ" was added to the router. 

  BR 
  Alex 

  
  Version- Kilo

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