> I'd have no way to know that RFC6275 recommends MaxRtrAdvInterval > value outside of the allowed range. As long as you don't support Mobile IP do you care? And largely no-one supports mobile IP. Punted to transport. Like all the other hard problems at the network layer. O -- last-call mailing list last-call@xxxxxxxx https://www.ietf.org/mailman/listinfo/last-call