2005-03-29 Andrew J. Schorr <ajschorr@alumni.princeton.edu>

	* rt_netlink.c: (netlink_link_change) If the status of an
	  operative interface changes (e.g. MTU changes), the client
	  daemons should be notified by calling zebra_interface_up_update.
	  Previously, the information was being updated in zebra's
	  interface structure, but the clients were not notified of
	  changes to an operative interface.
	* ospf_zebra.c: (ospf_interface_state_up) If the MTU of an operative
	  interface changes, print a debug message and call ospf_if_reset()
	  to simulate down/up on the interface.
	* ospf_interface.h: Declare new function ospf_if_reset().
	* ospf_interface.c: (ospf_if_reset) New function to call ospf_if_down
	  and ospf_if_up for all ospf interfaces attached to an interface.
diff --git a/ospfd/ospf_interface.h b/ospfd/ospf_interface.h
index b49a351..b3fb3ba 100644
--- a/ospfd/ospf_interface.h
+++ b/ospfd/ospf_interface.h
@@ -234,6 +234,9 @@
 int ospf_if_get_output_cost (struct ospf_interface *);
 void ospf_if_recalculate_output_cost (struct interface *);
 
+/* Simulate down/up on the interface. */
+extern void ospf_if_reset (struct interface *);
+
 struct ospf_interface *ospf_vl_new (struct ospf *, struct ospf_vl_data *);
 struct ospf_vl_data *ospf_vl_data_new (struct ospf_area *, struct in_addr);
 struct ospf_vl_data *ospf_vl_lookup (struct ospf_area *, struct in_addr);