hi, we only have 1 box running SXI2 right now, with all the others still on SXI1 and a special debug SXI1 - so far, touch wood, no wierdness or problem on that SXI2 box - we're running the normal IPv4, IPv6, HSRP, SSH etc on non modular. (the debug is because of an SXI1 thing which we're hoping isnt in SXI2 anyway....) alan