diff -up netkit-rwho-0.17/rwhod/rwhod.c.neighbours netkit-rwho-0.17/rwhod/rwhod.c

--- netkit-rwho-0.17/rwhod/rwhod.c.neighbours	2011-06-01 18:26:01.913226552 +0200

+++ netkit-rwho-0.17/rwhod/rwhod.c	2011-06-01 18:28:44.434226510 +0200

@@ -383,6 +383,8 @@ broadcaster()

 	getboottime(&mywd);

 	while (1) {

+		if (!configure(sk))

+			exit(1);

 		sendpacket(&mywd);

 		(void) sleep(AL_INTERVAL);

 	}

@@ -603,6 +605,20 @@ configure(int s)

 	struct sockaddr_in *sn;

 	register struct neighbor *np;

+	/* forget previous neighbors; interfaces may have changed */

+	for (np = neighbors; np != NULL; ) {

+		register struct neighbor *pp;

+ 

+		if(np->n_name)

+			free(np->n_name);

+		if(np->n_addr)

+			free(np->n_addr);

+		pp = np;

+		np = np->n_next;

+		free((char *)pp);

+	}

+	neighbors = 0;

+

 	ifc.ifc_len = sizeof (buf);

 	ifc.ifc_buf = (char *)buf;

 	if (ioctl(s, SIOCGIFCONF, &ifc) < 0) {