IPv4 and Auctions

[mattlists at rivervalleyinternet.net (Matt Hoppes)]

On 10/24/19 9:25 AM, Chris Adams wrote:
> Once upon a time, Matt Hoppes <mattlists at rivervalleyinternet.net> said:
>> You donâ??t suddenly just not need a/8 or suddenly not need a/21.
> 
> You don't "suddenly just" do lots of things, because things change over
> time; no need to attribute malicious intent.  For example, a former
> employer had a /17, a /18, and a /19 at one point (and even that was
> kind of tight).  The business has changed though, and now they have a
> /23 and two /24s, and sold the rest.
> 


I get that -- but if you don't need a /18, don't the ARIN rules require 
they be returned?