[6bone] Is minimum allocation /64 now?

Haesu haesu@towardex.com
Sat, 25 Oct 2003 07:14:58 -0400


Yea, more subnets do make sense.. I agree with you on that :)

I can just imagine people having a core router in the basement of their house to route subnets all over their house hhehe 

-hc

-- 
Haesu C.
TowardEX Technologies, Inc.
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On Sat, Oct 25, 2003 at 01:07:58PM +0200, Jeroen Massar wrote:
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> Haesu wrote:
> 
> > I understand the need to promote IPv6, and I understand the 
> > whole point of IPv6 is to provide fullblown end-to-end 
> > connectivity by having more than enough addresses everywhere..
> > 
> > But a /48 for a home network?.. i dunno..
> >
> > I think /64 for a home network is far more than enough and reasonable.
> > Likewise, we hand off /64's to endusers, for those who want 
> > more, may be /60 or if requested, /48...
> 
> Funny administrativia you are going to do.
> Also if they move from another ISP to yours they suddenly
> are getting a much smaller block?
> 
> The global TLA allocation is done on the assumption that
> you have 200 endsites under your TLA.
> 
> If you get a standard /32, you have 2^16 = 65535 /48's
> If you need more, aka you run out, just request a bigger TLA.
> 
> > Feel free to correct me if my math is wrong but I believe /64 
> > offs 18446744073709551616 addresses which is far more than 
> > the entire space IPv4 technology itself can offer.
> 
> But you are calculating the wrong thing.
> A link gets a /64, thus there is a possiblity that a endsite
> (I am not talking users/homes here, these could be companies)
> put up 64-48 -> 2^16 = 65535 subnets.
> 
> And in that subnet you can plug basically anything you like.
> Indeed there are going to be a lot of IP's being unused.
> 
> > I wanna see a single home user who will actually *use* even 
> > 50% of 18446744073709551616 addresses.
> 
> I do, as I got two subnets here:
> 2 * (2^64) = 36893488147419103232 IP's in use.
> 
> And I can plugin *any* apparatus in both my wired and
> my wireless network and tadaaaaaa it WORKS, global connectivity!!!!!! :)
> 
> > Start assigning IP's to every object in your house... i.e. 
> > fridge, watch, clock, cell phone, 3g, TV, playstation, 
> > computers, lights, microwave, coffeemaker, toilet, etc etc, 
> > etc et al. and I doubt even with all that, it comes close to 
> > half of 18446744073709551616.
> 
> You are assuming IPv4 style addressing, don't think like that.
> There are 65535 subnets per endsite.
> 
> You have to realize that in the future it might be that a
> house gets totally routed, eg subnets for:
>  - the kitchen
>  - the living room
>  - the first floor
>  - the second floor
>  - the toilet
>  - the molly's room
>  - the johnny's room
>  - ...
> 
> Don't think in IPv4 style, preservative, allocation, please...
> 
> > Isn't assigning /48 to end users a bit over excessive you 
> > think? Or is the whole point of IPv6 "Let's waste address 
> > space until we run out it and panic later on.."?
> 
> Please read: http://www.faqs.org/rfcs/rfc3194.html
> 
> If you feel the pain already... wow :)
> 
> Greets,
>  Jeroen
> 
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