My own experience was that I tried to use the 2000::/3 route initially and that was fine with static routes in my lab, but once dynamic routing protocols were introduced, ::/0 was the only thing recognized as "default" to propagate or not with default-route statements in BGP and OSPF.
That may vary from platform to platform, however the ones I played with all exhibited this behaviour. Theodore Baschak - AS395089 - Hextet Systems https://ciscodude.net/ - https://hextet.systems/ http://mbix.ca/ On Thu, Mar 2, 2017 at 8:01 PM, Dennis Bohn <b...@adelphi.edu> wrote: > Interesting question whether 2000::/3 or ::/0 is the better default route. > From what I can tell (as OP indicated) most are using ::/0. (I should > probably add for those who have not been running V6 for long that for the > forseeble future 2000::/3 is the extent of the V6 allocation, the rest > being held back for future use. Which is why that could be a default.) Is > there any case where 2000::/3 would hurt one? One person mentioned > something like 64:ff9b::/96, which per > http://www.iana.org/assignments/iana-ipv6-special- > registry/iana-ipv6-special-registry.xhtml, > is the v4 to v6 translator net. Does anyone actually use that? > best, > dennis > > Dennis Bohn > Manager of Network and Systems (ret) > Adelphi University > b...@adelphi.edu > > > On Thu, Mar 2, 2017 at 12:20 PM, Baldur Norddahl < > baldur.nordd...@gmail.com> > wrote: > > > Shouldn't that be 2000::/3 ? > > > > Den 2. mar. 2017 17.06 skrev "Aaron Gould" <aar...@gvtc.com>: > > > > Correction... ::/0 is what I learn from those 3 :) > > >
