IPv4 smaller than /24 leasing?

Tue Mar 13 18:14:23 UTC 2018

Even to buy it on the secondary market you have to have justification and show usage.  So if someone buys a /24 and really only needs a /25 then what? It ARIN, or others for that matter, going to relax those requirements?  If I am an ISP and need to do BGP, maybe because I have a big downstream customer, I have to have a /24 to participate in BGP.   I see these scenarios more and more.  

Justin Wilson
j2sw at mtin.net

www.mtin.net
www.midwest-ix.com

> On Mar 13, 2018, at 2:08 PM, Bob Evans <bob at FiberInternetCenter.com> wrote:
> 
> Marketplaces - supply and demand and costs to operate as Bill noted (never
> thought of that) will settle out the need.
> 
> Thank You
> Bob Evans
> CTO
> 
> 
> 
> 
>> I am looking at it from an ARIN justification point.  If you are a small
>> operator and need a /24 you have justification if you give customerâ€™s
>> publics, but is it a great line if you are only giving out publics for
>> people who need cameras or need to connect in from the outside world. If I
>> need a /24 and I donâ€™t really use it all am I being shady?  It becomes a
>> â€œhow much of a grey area is thereâ€ kind of thing.
>> 
>> 
>> Justin Wilson
>> j2sw at mtin.net
>> 
>> www.mtin.net
>> www.midwest-ix.com
>> 
>>> On Mar 13, 2018, at 1:37 PM, William Herrin <bill at herrin.us> wrote:
>>> 
>>> On Tue, Mar 13, 2018 at 1:19 PM, Justin Wilson <lists at mtin.net> wrote:
>>>> I agree that the global routing table is pretty bloated as is.  But
>>>> what kind of a solution for providers who need to participate in BGP
>>>> but only need a /25?
>>> 
>>> Hi Justin,
>>> 
>>> If you need a /25 and BGP for multihoming or anycasting, get a /24.
>>> The cost you impose on the system by using BGP *at all* is much higher
>>> than the cost you impose on the system by consuming less than 250
>>> "unneeded" Ip addresses.
>>> 
>>> I did a cost analysis on a BGP announcement a decade or so ago. The
>>> exact numbers have changed but the bottom line hasn't: it's
>>> ridiculously consumptive.
>>> 
>>> Regards,
>>> Bill Herrin
>>> 
>>> 
>>> 
>>> --
>>> William Herrin ................ herrin at dirtside.com  bill at herrin.us
>>> Dirtside Systems ......... Web: <http://www.dirtside.com/>
>>> 
>> 
>> 
> 
> 