Be more graceful about reporting home server state

src/main/command.c

@@ -642,7 +642,24 @@ static int command_show_home_servers(rad_listen_t *listener, UNUSED int argc, UN
 			state = "dead";
 
 		} else if (home->state == HOME_STATE_UNKNOWN) {
-			state = "unknown";
+			time_t now = time(NULL);
+
+			/*
+			 *	We've recently received a packet, so
+			 *	the home server seems to be alive.
+			 *
+			 *	The *reported* state changes because
+			 *	the internal state machine NEEDS THE
+			 *	RIGHT STATE.  However, reporting that
+			 *	to the admin will confuse him.  So...
+			 *	we lie.  Yes, that dress doesn't make
+			 *	you look fat.
+			 */
+			if ((home->last_packet_recv + home->ping_interval) >= now) {
+				state = "alive";
+			} else {
+				state = "unknown";
+			}
 
 		} else continue;