stack update failed: Unable to complete operation. LB or VM has have an IP allocation from the subnet.

[huangtianhua]

1. create a stack with the template: http://paste.openstack.org/show/617489/
2. update the stack to change the subnet cidr
3. the stack update failed: Unable to complete operation. LB or VM has have an IP allocation from the subnet.

[huangtianhua (huangtianhua)]

The version is mitaka

[huangtianhua (huangtianhua)]

In pike, the error raised:
rces.my_router-interface: Router interface for subnet 035c288e-e1ff-4b43-ac14-b8977a53b2bc on router 21893d1a-9018-48f9-a924-95b6211fd4df cannot be deleted, as it is required by one or more floating IPs.