Re: Route cache performance tests

   From: Ralph Doncaster [off-list ref]
   Date: Tue, 17 Jun 2003 18:11:00 -0400 (EDT)
   
   My (obviously incorrect) assumption would
   be that fib_validate_source is responsible for rp_filter, and turning it
   off would lead to only a 5% performance increase.

fib_validate_source() with rp_filter enabled causes an extra
fib_lookup() to occur for each packet.