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Re: IPv6 prefix lengths - how long?

Fred Baker <fredbaker.ietf@gmail.com> Tue, 11 June 2019 04:51 UTC

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From: Fred Baker <fredbaker.ietf@gmail.com>
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Subject: Re: IPv6 prefix lengths - how long?
Date: Mon, 10 Jun 2019 21:51:37 -0700
In-Reply-To: <2df5b0bb7e8e43c594de501b38e9cfef@boeing.com>
Cc: Mark Smith <markzzzsmith@gmail.com>, 6man WG <ipv6@ietf.org>
To: "Manfredi (US), Albert E" <albert.e.manfredi@boeing.com>
References: <ee811897e2d2438e9c3592012b725ac3@boeing.com> <CAO42Z2xyenxV+z58VW_h4skbWz14hyVt2pUd32tLZ826UoZKZA@mail.gmail.com> <9826C993-3670-4D7B-8709-B3FDE2A79359@gmail.com> <EEBC9697-18A1-41DF-95FB-33D0F5098620@consultant.com> <CABNhwV2fX9LrwzuJX297CoF1XNNM2U=m22QSVWEtaS9PQkM3Dg@mail.gmail.com> <CABNhwV3hA27hmdi4+WfK5ZhNPvta_d9anZA0+TJ2Uuj78kx4Cg@mail.gmail.com> <CABNhwV0rOT461e2Oc0S6e_fK_2zaLQ7Wk5sCFJCFO3xqeH2a9g@mail.gmail.com> <bd98b965334c43969b9f29662e7993b8@boeing.com> <CAO42Z2yz1vZGz0bnhfyOuoqNGcP8RFfgYV0P0LGXW7of5SSzBA@mail.gmail.com> <2df5b0bb7e8e43c594de501b38e9cfef@boeing.com>
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> On Jun 10, 2019, at 6:20 PM, Manfredi (US), Albert E <albert.e.manfredi@boeing.com> wrote:
> 
> We’ve been around and around on this. Today’s reality is that households and devices are being provided, in many cases, with only a /64. Therefore, unless the households or devices are happy with a flat address space inside their /64, prefix, they would need to be assigned more /64 prefixes.

My understanding, from a number of ISP sources, is that the ISP gives the user what s/he asks for. In many cases, that is a /64.

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