--- cu.c
+++ cu.c	Thu Jun 26 18:39:05 2003
@@ -565,6 +565,11 @@
       sinfo.zline = zline;
       if (zport != NULL || zline != NULL || ibaud != 0L)
 	{
+	  /* Make sure _everything_ is initialized to zero.
+	   * Otherwise some fields (such as uuconf_fcarrier)
+	   * will be random. */
+	  memset(&sport, 0, sizeof(sport));
+
 	  iuuconf = uuconf_find_port (puuconf, zport, ibaud, 0L,
 				      icuport_lock, (pointer) &sinfo,
 				      &sport);