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[Launchpad Bug Tracker <1870723@xxxxxxxxxxxxxxxxxx>]

[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1870723

Title:
  vm cannot be created after a large number of vms are removed from the
  same node

Status in neutron:
  Expired

Bug description:
  vm cannot be created after a large number of virtual machines are
  removed from the same node

  1、create a security group, has remote security group rule
  2、create 50 vms in same node(eg: node01) and use same security group created in step 1
  3、delete all vms created in step 2
  4、create some vms in nodeo1
  5、all vms create failed. error is: Build instance <id> aborted: Failed to allocate the network(s), ...

  
  By observing the database when creating the vm, it is found that port's L2 block has not been removed.

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