Gents, I thought I would pose the martians question here as well...
I'm trying to find out additional information on the reasoning behind adding these martians to the Juniper's security appnote found on their website:
Prefix Description 19.255.0.0/16 Ford Motor Company 129.156.0.0/16 Sun Microsystems 192.5.0.0/24 no match 192.9.200.0/24 no match 192.9.99.0/24 Sun Microsystems
A number of these prefixes were used in early documentation and as such were widely deployed by early adopters of IP. In the "bad old days" a large number of sites stood up IP networks in isolation, only interconecting -after- inital rollout was done. Consider it as an early empirical trials with RFC 1918 space :) Based on the confusion, 192.0.2.0/24 was earmarked for use in documentation... :) I know of no good reason why Juniper continues to flag these legacy blocks. --bill