Hi Bert, On 15 Nov. 2012, at 11:55 , Bert Wijnen (IETF) <bertietf@xxxxxxxxxxx> wrote: [snip] > > So it is not asking just a /16 but also asking for reservation of a /12. > > Pretty big space. > > And in the list of reasons, I mainly read that it is "sufficiently large", > but not much about why it needs to be this big. Why would a smaller > allocation not be sufficient? > Well, to keep it short, the WG felt that /16 is the "right size", and that if the growth of LISP would be so important as to need a bigger space would be nice to have it contiguous (so implementations can just change the prefix length). Luigi > Bert