How does this work?
http://www.cisco.com/en/US/docs/security/asa/asa72/release/notes/asarn72.html#wp84471
The examples that I have show very simplistic configurations using private IP addressing and if were to have a standby ISP, how can I route the public block of addresses that I have configured from ISP1 to the standby ISP2 without BGP configured?