diff -Naur netkit-old/bin/script_utils netkit-new/bin/script_utils
--- netkit-old/bin/script_utils	2007-12-19 10:55:58.000000000 +0100
+++ netkit-new/bin/script_utils	2008-10-31 17:02:05.000000000 +0100
@@ -274,14 +274,14 @@
          echo "********     (root privileges are required)      ********"
          run_command "$JUST_PRINT" \
                      "$NETKIT_HOME/bin/manage_tuntap start $USER $2 $3 $1" \
-                     "su -mc \"$NETKIT_HOME/bin/manage_tuntap start $USER $2 $3 $1\"" || \
+                     "sudo -E /bin/sh -c \"$NETKIT_HOME/bin/manage_tuntap start $USER $2 $3 $1\"" || \
             { echo 1>&2 "Error while configuring the tunnel."; exit 1; }
          echo "************** Abandoning root privileges ***************"
          echo
       else
          run_command "$JUST_PRINT" \
                      "$NETKIT_HOME/bin/manage_tuntap start $USER $2 $3 $1" \
-                     "su -mc \"$NETKIT_HOME/bin/manage_tuntap start $USER $2 $3 $1\"" >/dev/null || \
+                     "sudo -E /bin/sh -c \"$NETKIT_HOME/bin/manage_tuntap start $USER $2 $3 $1\"" >/dev/null || \
             { echo 1>&2 "Error while configuring the tunnel."; exit 1; }
       fi
       run_command "$JUST_PRINT" "$HUB_COMMAND" "$COMPLETE_COMMAND"
diff -Naur netkit-old/bin/vclean netkit-new/bin/vclean
--- netkit-old/bin/vclean	2007-11-23 12:25:56.000000000 +0100
+++ netkit-new/bin/vclean	2008-10-31 17:00:10.000000000 +0100
@@ -322,12 +322,12 @@
    if [ -z "$BE_QUIET" ]; then   
       run_command "" \
                   "$NETKIT_HOME/bin/manage_tuntap stop" \
-                  "su -mc \"$NETKIT_HOME/bin/manage_tuntap stop\"" || \
+                  "sudo -E /bin/sh -c \"$NETKIT_HOME/bin/manage_tuntap stop\"" || \
                      { echo 1>&2 "Error while removing tunnel configurations"; exit 1; }
    else
       run_command "" \
                   "$NETKIT_HOME/bin/manage_tuntap stop" \
-                  "su -mc \"$NETKIT_HOME/bin/manage_tuntap stop\"" >/dev/null || \
+                  "sudo -E /bin/sh -c \"$NETKIT_HOME/bin/manage_tuntap stop\"" >/dev/null || \
                      { echo 1>&2 "Error while removing tunnel configurations"; exit 1; }
    fi