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I'd heard from some users they were having trouble allocating floating 
IPs in our Liberty cloud, so I tried on my test account.  I had two 
floating IPs (with a quota of (at least) three); I released and 
immediately tried to re-acquire, and it failed with:

[Fri Apr 22 02:59:36.839441 2016] [:error] [pid 25146:tid 
140282618590976] Recoverable error: Quota exceeded for resources: 
['floatingip']

Note that Horizon shows me with one out of my quota of three IPs 
allocated and associated.

Helpfully (not), here are the values I get back from various commands:

gbadmin at openstack-cli:~ liberty(prod)$ openstack quota show kentenant | 
grep float
| floating-ips          | 50        |

gbadmin at openstack-cli:~ liberty(prod)$ neutron quota-show | grep float
| floatingip            | 50    |

gbadmin at openstack-cli:~ liberty(prod)$ nova quota-show | grep float
| floating_ips                | 10    |

You'll note that none of these is the "three" shown in Horizon.

Regardless, even if they were, I should still have two floating IPs 
available to me, as I have exactly one allocated.  Smells like a bug to 
me -- perhaps released addresses not being returned to a pool?  Googling 
hasn't shown me anything of note; any ideas?

Thanks,

-Ken