I am using openstack yoga by kolla-ansible but when i reconfigure octavia then it stucked at 

TASK [octavia : Create loadbalancer management network]

\"Unable to create the network. The VLAN xxx on physical network physnet1 is in use.\

I see that it cannot create lb network because someone used it.

Will we need to change some kolla-ansible tasks to fix it?

Thank you very much.