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[rpd] Report of the Soft Landing isuue

Mark Elkins mje at
Mon Apr 3 12:01:06 UTC 2017

On 03/04/2017 13:41, Noah wrote:
> On 3 Apr 2017 12:55 a.m., "Owen DeLong" <owen at
> <mailto:owen at>> wrote:
>     I am not calling for softening and depleting IPv4 at this stage,
>     but I don’t see any advantage to tightening it, either.
> The last i checked, the IPv4 FIB is handling over 600k aggregate
> prefixes vs IPv6 FIB that stands at close to only 40k aggregate
> prefixes a compeling fact that the internet is still largely dependent
> on IPv4 today.

Noah, you can't use that argument. Perhaps a better number to look at
would be how many ASN's there are in the routing table, and how many of
them are IPv4 only vs how many have both IPv4 and IPv6 or even IPv6 only.

Most ISP's run with one ASN but many run with multiple ASN's - but I
believe ASN's would be a better measurement.

I, as an ISP advertise one /32 of IPv6, and multiple IPv4 prefixes.

> Very few IPv6 only green fields to say the least.
>     In fact, I would argue that by insisting on holding resources in
>     the free pool for “possible future newcomers” you are, in effect,
>     assigning them to organizations without any current proof of
>     physical infrastructure in the AfriNIC service region to the
>     disadvantage of organizations that do currently have proof of
>     infrastructure and a documented need for the addresses within the
>     region today.
> IMHO, your premise is flawed, in my experience (having worked for 3 SP
> startups and still do),  because we were all startups at some point
> when we involved ourselves in the business of connecting folk to the
> internet and every iron that we fired up then and today needed and
> still needs at the very least an IPv4 address to connect to the internet.

Occasionally at AFRINIC Meetings, we have an "IPv6 only" day. Generally,
most people survive just fine. I think this "IPv6 Only" day event should
perhaps be something we always do at our meetings. Its also been done at
SAFNOG (Southern African NOG) a few times.

> In anycase, IPv6 internet is still developing sponteneously at almost
> 40k prefixes announced with a few case studies around the US, Europe,
> Asian and some parts of Africa and South America and could take
> another decade as long as telecoms  around the world still run CGN's.  
> IMHO market forces and tech-dynamics (IoT) will push for IPv6 adoption
> and until then, the over a decade aggressive invetments in IPv4
> internet will still stand even though most equipment and software
> today pretty much supports IPv6.
> Noah

Mark James ELKINS  -  Posix Systems - (South) Africa
mje at       Tel: +27.128070590  Cell: +27.826010496
For fast, reliable, low cost Internet in ZA:

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