Unicast Reverse Path Forwarding what IPs are dropped without

According to the docu 4 types of addresses are blocked:
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t13/feature/guide/ft_urpf.html

Loose mode allows Unicast RPF to automatically detect and drop packets such
as the following:

IETF RFC 1918 source addresses

Other Documenting Special Use Addresses (DUSA) that should not appear in
the source

Unallocated addresses that have not been allocated by the Regional Internet
Registries (RIRs)

Source addresses that are routed to a null interface on the router

1) RFC1918 and 4) null route are easy to understand.

But what other address-ranges are blocked ?

Is there a command to show this on the router ?

Many thanks,
 keti

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Received on Fri Aug 13 2010 - 09:13:16 ART