Process control doesn't need IP at all at the edge of their network.
This is a side-track, but: Some people in the IETF, as well as in the industry, might disagree... Watch out for the next billion nodes on the Internet. Gruesse, Carsten (not speaking as 6lowpan co-chair today) _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf