Announce hostname on local interface.

Use the hostname instead of "alamakota" when announcing the router
on the local interface.  It would make it possible for visualisation
tools, such as babelweb, to display a meaningful name automatically.

local.c

@@ -91,13 +91,19 @@ void
 local_notify_self()
 {
     char buf[512];
+    char host[64];
     int rc;
-    
+
     if(local_socket < 0)
         return;
 
-    rc = snprintf(buf, 512, "add self alamakota id %s\n",
-                  format_eui64(myid));
+    rc = gethostname(host, 64);
+
+    if(rc < 0)
+        strncpy(host, "alamakota", 64);
+
+    rc = snprintf(buf, 512, "add self %64s id %s\n",
+                  host, format_eui64(myid));
 
     if(rc < 0 || rc >= 512)
         goto fail;