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[Launchpad Bug Tracker <1518819@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/1518819

Title:
  Can't specify gateway when creating subnet with subnetpool and without
  cidr

Status in neutron:
  Expired

Bug description:
  When creating a subnet by using the subnetpool(without specifying cidr), I can't specify the gateway. Either using --no-gateway or --gateway, the newly created subnet will have the first ip in the pool as the the gateway ip.
  Looks like the code don't consider gateway ip at [1], and always set the first ip in pool as gateway ip in [2].

  I fount this when creating an external network, which don't have a
  gateway indeed. The unnecessary gateway ip will create meaningless
  default route in router.

  [1] https://github.com/openstack/neutron/blob/master/neutron/ipam/requests.py#L290
  [2] https://github.com/openstack/neutron/blob/master/neutron/ipam/subnet_alloc.py#L126

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