Index: sbin/routed/input.c
===================================================================
--- sbin/routed/input.c.orig
+++ sbin/routed/input.c
@@ -288,6 +288,10 @@
 				/* Answer a query from a utility program
 				 * with all we know.
 				 */
+				if (aifp == NULL) {
+					trace_pkt("ignore remote query");
+					return;
+				}
 				if (from->sin_port != htons(RIP_PORT)) {
 					supply(from, aifp, OUT_QUERY, 0,
 					       rip->rip_vers, ap != 0);