Implement send_update_resend.

message.c

@@ -897,6 +897,22 @@ send_update(struct network *net, int urgent,
     schedule_update_flush(net, urgent);
 }
 
+void
+send_update_resend(struct network *net,
+                   const unsigned char *prefix, unsigned char plen)
+{
+    int delay;
+
+    send_update(net, 1, prefix, plen);
+
+    delay = 2000;
+    delay = MIN(delay, wireless_hello_interval / 2);
+    delay = MIN(delay, wired_hello_interval / 2);
+    delay = MAX(delay, 10);
+    record_resend(RESEND_REQUEST, prefix, plen, 0, 0, NULL, delay);
+}
+
+
 void
 update_myseqno(int force)
 {

message.h

@@ -60,6 +60,8 @@ void send_unicast_request(struct neighbour *neigh,
                           unsigned short router_hash);
 void send_update(struct network *net, int urgent,
                  const unsigned char *prefix, unsigned char plen);
+void send_update_resend(struct network *net,
+                        const unsigned char *prefix, unsigned char plen);
 void update_myseqno(int force);
 void send_self_update(struct network *net, int force_seqno);
 void send_ihu(struct neighbour *neigh, struct network *net);