2005-05-19 Paul Jakma <paul.jakma@sun.com>

2005-05-19 Paul Jakma <paul.jakma@sun.com>

	* ospf_interface.c: (ospf_if_table_lookup) Fix a serious bug
	  a less serious one.
	  1: this function is supposed to lookup
	  entries in the oifs ospf_interface route_table and return either
	  an existing oi or NULL to indicate not found, its caller depends
	  on this, yet this function uses route_node_get which /always/
	  returns a route_node - one is created if none exists. Use
	  route_node_lookup instead. This should fix root cause of the
	  reports of the (ospf_add_to_if) assert being hit.
	  2: oi's are inserted into this table with prefixlength set to
	  /32 (indeed, it should be a hash table, not a route_table),
	  however prefixlength to lookup was not changed, if no valid entry
	  can be inserted other than /32, then nothng but /32 should be
	  looked up. This possibly only worked by fluke..
	  Fix confirmed by 2 reporters (one list, one IRC), definitely a
	  backport candidate once it has been incubated in HEAD for a while.
	  Thanks to Patrick Friedel and Ivan Warren for testing.