From: Hasso Tepper <hasso@estpak.ee>
http://hasso.linux.ee/zebra/ht-no_interface-23052003.patch
Add the 'no interface' command to all the daemons and vtysh.
diff --git a/ripngd/ripng_interface.c b/ripngd/ripng_interface.c
index c177381..369c3d6 100644
--- a/ripngd/ripng_interface.c
+++ b/ripngd/ripng_interface.c
@@ -822,6 +822,7 @@
install_node (&interface_node, interface_config_write);
install_element (CONFIG_NODE, &interface_cmd);
+ install_element (CONFIG_NODE, &no_interface_cmd);
install_element (INTERFACE_NODE, &config_end_cmd);
install_element (INTERFACE_NODE, &config_exit_cmd);
install_element (INTERFACE_NODE, &config_help_cmd);