Maybe it will work now?

src/inet.c

@@ -1109,7 +1109,8 @@ inet_sendto(int s, const void *msg, size_t len, int flags,
 			const struct sockaddr * to, socklen_t tolen)
 {
 	ssize_t err;
-	char * ipv4_addr;
+	char *ipv4_addr;
+        size_t maxlen;
 	if ((err = sendto(s, msg, len, flags, to, tolen)) == -1) {
 		switch (errno) {
 		case EMSGSIZE:
@@ -1123,7 +1124,7 @@ inet_sendto(int s, const void *msg, size_t len, int flags,
                                 "and: %s", to->sa_family, 
                                 inet_ntop(to->sa_family,
                                 &(((struct sockaddr_in*)to)->sin_addr),
-                                ipv4_addr, sizeof ipv4_addr),
+                                ipv4_addr, maxlen),
                                 strerror(errno));
 		default:
 			error("inet_sendto: Cannot send(): %s", strerror(errno));