I think in the /etc/neutron/neutron.conf file, your setting is as - allow_overlapping_ips = False
if it is "True", you can use the same cidr in two different net. Thus it seems to me more an environment bug.
I think in the /etc/neutron/ neutron. conf file, your setting is as - ng_ips = False
allow_overlappi
if it is "True", you can use the same cidr in two different net.
Thus it seems to me more an environment bug.