https://docs.redhat.com/de/documentation/red_hat_openstack_services_on_openshift/18.0/html-single/deploying_a_rhoso_environment_with_distributed_zones/index#proc_attaching-service-pods-to-the-isolated-networks_for_bgp_network_prepare_dz

we should add a note that explains what the ipMasq does:

Optional: Set to true to enable IP 
masquerading for traffic that leaves the virtual network. The source IP 
address for all traffic is rewritten to the bridge’s IP address. If the 
bridge does not have an IP address, this setting has no effect. The 
default value is false.

with a brief explanation of why this may be needed in certain conditions, for example when the edpm nodes do not have the necessary routes or connectivity to the ctlplane network before frr is configured.

We could also split the example between ctlplane (where ipMasq: true could be useful, as mentioned) and internalapi and other networks, where we don't need it so it can be set to fale.