In message <9286.1286931928@xxxxxxxxxxxxxxxxxxxxx>, Michael Richardson writes: > > >>>>> "Mark" == Mark Andrews <marka@xxxxxxx> writes: > Mark> In message > Mark> <992DF93E-1EFB-4D68-BDD7-D5C7BE02FC01@xxxxxxxxxxxxxx>, > Mark> Marshall Euba nks writes: > >> Hello; > >> > >> I think that people here would be interested in (and likely > >> concerned by) the ARIN 2010-9 proposal : > >> > >> https://www.arin.net/policy/proposals/2010_9.html > >> > >> "On 15 July 2010 the ARIN Advisory Council (AC) selected "IPv6 > >> for 6rd" as a draft policy for adoption discussion on the PPML > >> and at the Public Policy Meeting in Atlanta in October. > >> > >> IPv6 for 6rd > >> > >> 6rd is an incremental method for Service Providers to deploy > >> IPv6, defined in the IETF Standards Track RFC 5969. 6rd has been > >> used successfully by a number of service providers to deploy IPv6 > >> based on automatic IPv6 prefix delegation and tunneling over > >> existing IPv4 infrastructure. .... " > >> > >> What worries me (and others) is that to give end users an IPv6 > >> /56 will generally require the assignments as short as /24s to > >> ISPs, due to the encapsulation of v4 addresses inside of v6 > >> addresses : > >> > >> "The 6rd prefix is an RIR delegated IPv6 prefix. It must > >> encapsulate an IPv4 address and must be short enough so that a > >> /56 or /60 can be given to subscribers." > >> > >> 56 - 32 = a /24 > > Mark> Only a naive deployment of 6rd would do this. > > Mark> If you deploy a 6rd prefix per IPv4 prefix you have allocated > Mark> and set appropriate IPv4 mask lengths in your DHCP replies to > > I tried to raise this point in April at the ARIN meeting, but it wasn't > understood. Deploying 6rd in parallel with native basically doubles the amount of IPv6 space required for simple deployments. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@xxxxxxx _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf