On Feb 8, 2014, at 3:37 AM, John Curran <jcur...@arin.net> wrote: > It's also true that if a sizable group of network operators were to actually > deploy source address validation (thus proving that it really is a reasonable > approach and doesn't carry too much operational or vendor implications), then > it would be quite reasonable for those operators to bring the results to > NANOG and get it recognized as a best current operating practice for networks > of similar design/purpose.
Many already do - including operators of very large networks. There are operational, vendor, and topological considerations which mean that it's achieved utilizing various mechanisms in different scenarios. ----------------------------------------------------------------------- Roland Dobbins <rdobb...@arbor.net> // <http://www.arbornetworks.com> Luck is the residue of opportunity and design. -- John Milton