Restrictions on LBaaS v2 APIs mainly include:
Traffic of the 100.125.0.0/16 network segment must be allowed by the security group of backend servers.
When creating load balancers, ensure that the member and virtual IP address associated with the same load balancer belong to the same router.
The protocol used for creating a listener can be only TCP or HTTP.
The NICs of backend servers must be primary NICs for which the default route has been configured.