On Mon, Jul 4, 2016 at 2:50 AM, Hal Murray <[email protected]> wrote:
> > Is there any good writeup on why BCP-38 is so hard to implement and/or why > it > isn't implemented more often? I assume it's money. Is the problem routers > can't do it? (fast enough) Or maybe ISPs don't have their act together? Speaking with my Data Centre consulting hat on, the reason seems to be that BCP-38 requires me to spend resources, but it is my neighbours that benefit. However, despite that, things are much better than they were in 2006. About 80% of the IPv4 space is behind gateways that implement BCP-38 (this figure has been constant since about 2012). See: https://spoofer.caida.org/summary.php It is not hardware (trivial load), or configuration (low maint once set up), it is simply that the cost-benefit ratio is horrible. Costs are low, but benefits are zero (or even negative, if you see your industry as a zero-sum game). -- Sanjeev Gupta +65 98551208 http://www.linkedin.com/in/ghane
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