This allows an application that knows how to provide seamless network connectivity (e.g., using QUIC multipath) to find out if doing so is desired. (cherry picked from commit 2de4925f5cc64aeb92e02a8f740d3ff20f36dddd) Test: builds, boots, runtest frameworks-net passes. Bug: 34630278 Change-Id: Ic7fd0b9e1cd879fdfaf84009d7125391895e9087