Reports the lifecycle state, active, idle, phase1, down, or destroy, of this Permanent Tunnel specifically. Because this tunnel is supposed to be continuously up by design, seeing it in anything other than active(3) is a more urgent finding than the same state on an ordinary on-demand tunnel, since the whole point of marking it permanent was to guarantee constant connectivity for whatever depends on it. Example: permanentTunnelState reporting down(131) for the tunnel to a disaster-recovery site is precisely the kind of finding that should page someone immediately, since that link exists specifically to always be up.