There is an error in this documentation: https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html-single/deploying_a_dynamic_routing_environment/index#bgp-advertise-traffic-redirect_intro-bgp

There is a note that says:
Note
In the RHEL kernel the maximum number of routing tables is 252. This limits the number of provider networks to 252.

However the actual limit is much higher (2147483648). See https://access.redhat.com/solutions/5349001