Re: RFC 1918 network range choices

[William Herrin <bill () herrin us>]

On Thu, Oct 5, 2017 at 1:32 PM, Jerry Cloe <jerry () jtcloe net> wrote:

> Several years ago I remember seeing a mathematical justification for it,
> and I remember thinking at the time it made a lot of sense, but now I can't
> find it.

Hi Jerry,

If there's special ASIC-friendly math here, beyond what was later
generalized with CIDR, it's not obvious.

10.0:    0000 1010 0000 0000

172.16:  1010 1100 0001 0000

172.31:  1010 1100 0001 1111

192.168: 1100 0000 1010 1000

AFAIK, it was simply one range each from classes A, B and C.

Regards,
Bill Herrin


-- 
William Herrin ................ herrin () dirtside com  bill () herrin us
Dirtside Systems ......... Web: <http://www.dirtside.com/>