On 15/Apr/15 16:24, Jonathan Call wrote: > Here is the output of 'show route extensive'. Hopefully it shows up > formatted properly this time. It copied okay for me this time (maybe because it's HTML e-mail, not sure). However... > > router1> ...oute 2001:db8:4000::1 extensive I thought the IPv4 entry was the one that came up as Unuseable? Mark.