Making Use of 240/4 NetBlock

Greg Skinner gregskinner0 at icloud.com
Sat Mar 12 05:30:48 UTC 2022


> On Mar 10, 2022, at 8:44 PM, Masataka Ohta <mohta at necom830.hpcl.titech.ac.jp> wrote:
> 
> IIRC, at some time, perhaps when CIDR was deployed widely and
> having something other than IPv4 was a hot topic, there was a
> discussion on releasing 240/4 in IETF. Reasonings against it were
> that the released space will be consumed quickly (at that time,
> NAT already existed but was uncommon) and that new IP will be
> designed and deployed quickly (we were optimistic).
> 
> 						Masataka Ohta
> 

There have been many discussions about 240/4 in the IETF.  For some examples, query “240/4” in the ‘ietf’ mail archive <https://mailarchive.ietf.org/arch/browse/ietf/?q=%22240/4%22> on mailarchive.ietf.org.

—gregbo
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