In Ciscoland its called Autosecure (IOS 12.3): http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/cas11_ds.htm
"Blocks all IANA reserved IP address blocks" The actual doc: <http://niatec.info/mediacontent/cisco/media/targets/resources_mod07/7_1_2_AutoSecure.pdf> Problem is, I still do not see that Cisco has a way of auto-updating a router that has used autosec_complete_bogon or autosec_iana_reserved_block. -Hank > We've proposed what vendors need to better support bogon filtering, even > wrote a draft: > http://arneill-py.sacramento.ca.us/draft-py-idr-redisfilter-01.txt > but last time I talked to cisco ios person (which was just two weeks ago > at IPv6 Summit), it still has not been done. Perhaps couple more people > who buy their hardware asking them about it will make a difference ...