The question that I think IESG should be asking themselves is how is this similar and/or different from other groups the have chartered or will in the future. Nearly every group has some people with a fairly strong idea of at least one way to solve the problem. Without this, it is usually not clear the work is even possible. Now some groups, XMPP for example, perhaps TLS long ago, have substantial deployment with difficult backwards compatibility questions - theses situation might require the charter to provide more than normal limitations to the scope of the solutions that are possible. I'm failing to see that dkim has existing deployments or difficult backwards compatibility problem that would cause the need for some special text in the charter more than you average WG.
The need for special text is not due to existing deployments or backwards compatibility problems; it is due to the existence of a small number of individuals who have a history of arguing quite forcefully that certain design decisions are carved in stone, despite the problems caused by those decisions and the lack of any working group consensus on those decisions. Said individuals have also been known to make misleading statements to support their arguments.
Keith _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf