slight addition to hasso's previous no_interface patch.
diff --git a/vtysh/vtysh.c b/vtysh/vtysh.c
index f6ab603..6b65826 100644
--- a/vtysh/vtysh.c
+++ b/vtysh/vtysh.c
@@ -1154,7 +1154,7 @@
        "quit",
        "Exit current mode and down to previous mode\n")
 
-DEFUNSH (VTYSH_ZEBRA|VTYSH_RIPD|VTYSH_OSPFD|VTYSH_OSPF6D,
+DEFUNSH (VTYSH_ZEBRA|VTYSH_RIPD|VTYSH_RIPNGD|VTYSH_OSPFD|VTYSH_OSPF6D,
 	 vtysh_interface,
 	 vtysh_interface_cmd,
 	 "interface IFNAME",
@@ -1184,7 +1184,7 @@
        NO_STR
        "Interface specific description\n")
 
-DEFUNSH (VTYSH_ZEBRA|VTYSH_RIPD|VTYSH_OSPFD|VTYSH_OSPF6D,
+DEFUNSH (VTYSH_ZEBRA|VTYSH_RIPD|VTYSH_RIPNGD|VTYSH_OSPFD|VTYSH_OSPF6D,
 	 vtysh_exit_interface,
 	 vtysh_exit_interface_cmd,
 	 "exit",