- Maybe Extend Radix methods to accept (network, mask) (contiguous masks only)

- tree.delete(RadixNode)

tree.copy()

more KNF

tree.search_all_containing(network) -> [ network, network ] (sorted by prefix)
(use search_best2 internally)

tree.search_containing(network) -> RadixNode or None
 Find the prefix containing 'network', not including an exact match. 

tree.num_prefixes()

$Id: TODO,v 1.19 2004/11/24 20:46:18 djm Exp $