--- apps/s_socket.c.orig	2016-05-27 20:37:22.000000000 +0200
+++ apps/s_socket.c	2016-05-27 20:44:30.000000000 +0200
@@ -590,7 +590,12 @@
     }
     *(p++) = '\0';
 
-    if ((ip != NULL) && !host_ip(str, ip, AF_INET))
+    if ((*h == '[') && (*(p-2) == ']')) {
+        h++;
+        *(p-2) = '\0';
+    }
+
+    if ((ip != NULL) && !host_ip(h, ip, AF_INET))
         goto err;
     if (host_ptr != NULL)
         *host_ptr = h;