This reports the operational Graceful Restart role this device is actually playing: acting as a helper to a restarting neighbor, itself being restart-capable, or simply not applicable if GR isn't in use. An admin verifying that GR will actually work as expected during a planned neighbor restart should check this is restartCapable(2) or helpNeighbor(1) as appropriate, since notApplicable(3) would mean the feature isn't actually active despite being administratively enabled. For example, seeing helpNeighbor(1) on this device confirms it is prepared to preserve forwarding state for a peer that is itself restarting.