first cuppa, so i am easily confuddled. and apologies for doing this at last call. are the following definitions o Routable - A boolean value indicating whether a IP datagram whose destination address is drawn from the allocated special-purpose address block is routable (i.e., may traverse more than a single IP interface) o Global - A boolean value indicating whether a IP datagram whose destination address is drawn from the allocated special-purpose address block is routable beyond a specified administrative domain. intended to be baked in hardware, or are they SHOULDs to operators? i look at RFC 1918 space and 127.0.0.0/8 and am not so sure how hard these boundaries are meant to be. i worry because i think we regret how we specified (threw away is more like it) E space. does the prefix describes a specific prefix length or a covering range? e.g. 192.0.0.0/24 is neither routable nor global, while a subnet, 192.0.0.0/29, is routable. i.e. might i route and forward 192.0.0.128/25? randy