2005-07-29 Paul Jakma <paul.jakma@sun.com>

2005-07-29 Paul Jakma <paul.jakma@sun.com>

	* interface.c: (if_delete_update) should always be available, not
	  just on RTM_IFANNOUNCE/NETLINK systems.
	* kernel_socket.c: (ifan_read) only call if_delete_update when
	  interface departs, dont if_delete, because we wish to retain
	  interface configuration state even when interfaces are removed.
	  (ifm_read) If we dont have RTM_IFANNOUNCE, then transitioning
	  to down state is only chance we have to clean up interface in case
	  it is deleted (eg Solaris down -> unplumb -> plumb up).
	* redistribute.c: (zebra_interface_delete_update) should always be
	  available, we /will/ call it now on all systems, via
	  if_delete_update.
	* zserv.c: (zsend_interface_delete) ditto
	  (zsend_interface_address) Update the call-flow diagramme, to
	  reflect that if_delete_update /is/ now called on all systems,
	  potentially.
	* zserv.h: (zsend_interface_delete) unconditionally exported, as
	  above.