All this means is the US is releasing or ‘offering for public sale and use’ a large block of IP addresses. DARPA invented the internet and all IP spaces were originated on US equipment. Anyone who wanted in needed to obtain a block of IPs from the originator who had them. IPs need to be official so they are registered, listed and routable globally.
Possibly people were using these IP addresses surreptitiously and they were creeping into global route tables. Publishing them and offering them for sale is a good way to clean up routes and provide the additional IPs the global marketplace can use. Now that they’re out in the open they’ll be purchased, published and used. This will clean up some bad routing issues allowing traffic to run more efficiently.
Of course it could all be something more nefarious or even sinister.
But imo this could be a good boost for SpaceX’s StarLink internet service if they purchase the addresses. It’ll greatly improve their customers’ service by reducing the number of routers needed to deliver to end users. Good streamlining.
Thank you.
Your explaination explains everything