I'm not going to copy the spfbis WG list on this, because this is part of the IETF last call. No hat. On Mon, Aug 19, 2013 at 02:04:10PM -0700, Murray S. Kucherawy wrote: > On Mon, Aug 19, 2013 at 1:59 PM, Dave Crocker <dhc@xxxxxxxxxxxx> wrote: > > From earlier exchanges about this concern, the assertion that I recall is > > that 7 years is not long enough, to determine whether a feature will be > > adopted. > What is the premise for seven years being "not long enough"? And what does > constitute "long enough"? And upon what is that last answer based? I have two observations about this. First, EDNS0, which is of significantly greater benefit to DNS operators than the mere addition of an RRTYPE, took well over 10 years to get widespread adoption. Second, we all know where IPv6 adoption stands today, and that has certainly been around longer than 7 years. So I think it _is_ fair to say that adoption of features in core infrastructure takes a very long time, and if one wants to add such features one has to be prepared to wait. But, second, I think all of that is irrelevant anyway. The plain fact is that, once 4408 offered more than one way to publish a record, the easiest publication approach was going to prevail. That's the approach that uses a TXT record. Best, A -- Andrew Sullivan ajs@xxxxxxxxxxxxxxxxxx