The fix is proposed for situation when nothing nasty happens, just a routine API call fails somewhere in nova-network because instance reservation check is not aware of fixed IP quota.
It does not make situation worse with race condition: currently we can accept API call, case it further and at the same moment something fast can eat last fixed IP.
The fix is proposed for situation when nothing nasty happens, just a routine API call fails somewhere in nova-network because instance reservation check is not aware of fixed IP quota.
It does not make situation worse with race condition: currently we can accept API call, case it further and at the same moment something fast can eat last fixed IP.
Please consider unsetting "-1".