On Wed, Jun 10, 2015 at 1:22 PM, Nicholas Warren <nwar...@barryelectric.com> wrote:
> Sincere apologies if this e-mail is inappropriate for this audience, > We are (going to be) a startup ISP building a new network from the ground > up. I was hoping I could get an opinion, or two, on how everyone feels > about 464XLAT. I saw what everyone was saying about it in the 'Android > doesn't support DHCPv6' discussion, but what about in the wireline side of > things? The main reason we are even considering 464XLAT as opposed to > dual-stack (the latter is, in my ignorant opinion, the better option.) is > the fear of IPv4 depletion that we think might hit ARIN between now and the > start of next year; causing us to pay a premium for IPv4 in the gray > market. So I guess the real question here would be: is our fear real, or is > it just bug on the wall? If our fear is real, what should we implement so > that our users can still get to the v4 internet, are we even thinking > soberly by suggesting 464XLAT? > Thanks, > - Nich > > Yes, your fears about IPv4 are correct. If you have a look at ARIN PPML lately, you can see some pretty intense "discussion" about companies exporting ARIN addresses to CCNIC and so on. As a greenfield, you should definitely be focused on IPv6-only to the edge solutions. DS-lite, MAP-E, and 464XLAT come to mind. DS-lite is the oldest and most common in wireline. 464XLAT is more common in mobile. MAP-E and MAP-T have not yet been deployed at the same scale as DS-lite and 464XLAT yet AFAIK, not sure if they will be. You could also simply do dual-stack with private space and CGN to the end user using RFC1918 (10.0.0.0/8, 100.64.0.0/10) Regards, CB
