In virtual machine mobility architectures, which technical issue is LISP implemented to resolve?

LISP is not primarily designed for data center VLAN extension; its main purpose is to enable endpoint mobility across different network locations while maintaining reachability without changing IP addresses.

While LISP's control-plane learning can indirectly help reduce unknown unicast flooding by providing explicit mapping information, its core function is to optimize routing paths for mobile endpoints, not specifically to address flooding as its primary problem.

LISP is not designed to resolve multicast limitations in the WAN; those are typically addressed by multicast routing protocols and specific network designs.

LISP addresses suboptimal traffic flow by decoupling a VM's identity (Endpoint ID) from its current network location (Routing Locator). When a VM moves to a different data center, its RLOC is updated, and LISP redirects future traffic directly to the new location, preventing traffic from 'hairpinning' back through the original data center.