> On Mar 10, 2022, at 8:44 PM, Masataka Ohta <mo...@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
