I work on a service provider and we are currently in the process of installing a new Core network which will be using MPLS SR. What is recommended to use for the loopbacks of the routers? public or private addresses. my understanding is that as long as we user private addresses internally for l3vpn and l2vpn circuits we should be fine using private IP from RFC1918. Is there an scenerio where we will need to have public internet routable IP for the loopbacks.
