IPv6 Default Allocation - What size allocation are you giving out

Mark Andrews marka at isc.org
Thu Oct 9 09:29:14 UTC 2014


In message <1AA6F1A9-D63B-4066-903D-0E8690C7C567 at isi.edu>, manning bill writes:
> yes!  by ALL means, hand out /48s.  There is huge benefit to announcing =
> all that dark space, esp. when
> virtually no one practices BCP-38, esp in IPv6 land.
> 
> 
> /bill
> PO Box 12317
> Marina del Rey, CA 90295
> 310.322.8102

and if everyone hands out /48's you just filter /48's.  With a mix of /56
and /48 you need to filter at the /56 level.  Given enterpises are getting
/48's it will be simpler overall for everyone to get /48's.
 
> On 8October2014Wednesday, at 18:31, Mark Andrews <marka at isc.org> wrote:
> 
> >=20
> > Give them a /48.  This is IPv6 not IPv4.  Take the IPv4 glasses off
> > and put on the IPv6 glasses.  Stop constraining your customers
> > because you feel that it is a waste.  It is not a waste!!!!  It
> > will also reduce the number of exceptions you need to process and
> > make over all administration easier.
> >=20
> > As for only two subnets, I expect lots of equipment to request
> > prefixes in the future not just traditional routers.  It will have
> > descrete internal components which communicate using IPv6 and those
> > components need to talk to each other and the world.  In a IPv4
> > world they would be NAT'd.  In a IPv6 world the router requests a
> > prefix.
> >=20
> > Mark
> >=20
> > In message <495D0934DA46854A9CA758393724D5906DA244 at NI-MAIL02.nii.ads>, =
> Erik Sun
> > dberg writes:
> >> I am planning out our IPv6 deployment right now and I am trying to =
> figure o=3D
> >> ut our default allocation for customer LAN blocks. So what is =
> everyone givi=3D
> >> ng for a default LAN allocation for IPv6 Customers.  I guess the idea =
> of ha=3D
> >> nding a customer /56 (256 /64s) or  a /48 (65,536 /64s) just makes me =
> cring=3D
> >> e at the waste. Especially when you know 90% of customers will never =
> have m=3D
> >> ore than 2 or 3 subnets. As I see it the customer can always ask for =
> more I=3D
> >> Pv6 Space.
> >>=20
> >> /64
> >> /60
> >> /56
> >> /48
> >>=20
> >> Small Customer?
> >> Medium Customer?
> >> Large Customer?
> >>=20
> >> Thanks
> >>=20
> >> Erik
> >>=20
> >> ________________________________
> >>=20
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> >> r. Thank you.
> > --=20
> > Mark Andrews, ISC
> > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org



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