Powerline proponents gather Monday at an IEEE 1901 meeting in Boston to see if they can hammer out a common spec—and sparks may fly. HomePlug and Panasonic have a proposal that mandates coexistence between them but makes interoperability optional. The DS2 crowd is calling for one PHY that everyone supports, even if it means new silicon. I'm convinced the DS2 approach is the right one, though I am not sure how sincere anyone is about biting this bullet. Stay tuned.