During environment deployment, Murano will create dedicated network for each of them, and every such network will have a subnet created. All these subnets will have identical ip-ranges. Theoretically this is perfectly fine, as these subnets belong to different isolated Networks (L2 segments) and are connected to different routers.
However, by default Neutron does not allow overlapping IPs for different subnets - even in different Networks.
To override this restriction, change /etc/neutron/neutron.conf: uncomment allow_overlapping_ips parameter
and change its value to True:
[DEFAULT]
...
# Enable or disable overlapping IPs for subnets
# Attention: the following parameter MUST be set to False if Neutron is
# being used in conjunction with nova security groups
allow_overlapping_ips = True
Then, restart all neutron services:
cd /etc/init.d/
for q in quantum-*; do restart $q; done
