Re: is ipv6 fast, was silly Redeploying

[Owen DeLong via NANOG <nanog () nanog org>]

> On Nov 21, 2021, at 09:04 , Masataka Ohta <mohta () necom830 hpcl titech ac jp> wrote:
>
> Owen DeLong wrote:
>
> > Uh, no. It is so because on average IPv4 is so fragmented that most
> > providers of any size are advertising 8+ prefixes compared to a more
> > realistic IPv6 average of 1-3.
>
> Mergers of entities having an IP address range is a primary reason
> of entities having multiple address ranges. As IPv6 was
> developed a lot later than IPv4, it has not suffered from
> mergers so much yet.

No, it is not. Slow start and other RIR policies around scarcity and fairness of
distribution of the last crumbs are the primary contributor, with traffic engineering
a somewhat distant second. Mergers are actually somewhere around 10th on the list last
time I looked.

Owen