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can quantum "add" ip pools to a existing subnet?

In grizzly I create a network and corresponding subnet with a given allocation-pool (say 1.1.1.1 - 1.1.1.50). After this network has been used (by router or some other VMs), could I add more IPs to this subnet, ex. (1.1.1.51 - 1.1.1.100)?

I tried to use quantum subnet-update, but --allocation-pool option can not be used in update (according to http://docs.openstack.org/api/openstack-network/2.0/content/Concepts-d1e369.html). The only way seems to delete the subnet and re-create it with wider pools, or is there any other ways?

can quantum "add" ip pools to a existing subnet?

In grizzly I create a network and corresponding subnet with a given allocation-pool (say 1.1.1.1 - 1.1.1.50). After this network has been used (by router or some other VMs), could I add more IPs to this subnet, ex. (1.1.1.51 - 1.1.1.100)?

I tried to use quantum subnet-update, but --allocation-pool option can not be used in update (according to http://docs.openstack.org/api/openstack-network/2.0/content/Concepts-d1e369.html). The only way seems to delete the subnet and re-create it with wider pools, or is there any other ways?