More fixes. Now works on cluster nodes.

tmcd/common/config/rc.tunnels

 #!/usr/bin/perl -w
 #
 # EMULAB-COPYRIGHT
-# Copyright (c) 2004 University of Utah and the Flux Group.
+# Copyright (c) 2004, 2008 University of Utah and the Flux Group.
 # All rights reserved.
 #
 use English;
@@ -63,6 +63,7 @@ sub docleanup();
 # After libsetup include; tunnels run outside in fake vnode setup.
 my $PIDFILE        = CONFDIR() . "/tunnel.pid";
 my $VTUNDCONFIG    = CONFDIR() . "/vtund.conf";
+my $LOGFILE        = $LOGDIR   . "/vtund.debug";
 
 # Parse command line.
 if (! getopts($optlist, \%options)) {
@@ -278,6 +279,17 @@ sub doboot()
 		"    Could not exec $cmd\n");
 	}
     }
+
+    #
+    # Now daemonize and let the boot continue.
+    #
+    if (TBBackGround($LOGFILE)) {
+	sleep(1);
+	exit(0);
+    }
+    # Fully disconnect from bootup. 
+    setsid();
+    
     #
     # Just wait. We will die via the signal handler above.
     #