I found the multicast registery here.

https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml

I already knew that addresses between 224.0.0.1 and 239.255.255.255 are reserved by multicast.

Obviously multicast could be immensely useful if used by the general public, it would obsolete much of facebook, youtube, nearly all CDNs (content delivery networks), would kill cloudflare and company’s business model and just re-arrange the internet with far reaching social implication.

So, why hasn’t all these multicast addresses been converted in usable private IPv4 unicast address space ?

  • interdimensionalmeme@lemmy.mlOP
    1·
    19 days ago

    Each would need to keep track of the subscriptions, meaning more resources that would mean higher cost.

    They need to do it with unicast, which necessarily takes more resources to do. Think of it, 500 unicast stream or a single multicast stream, it’s not even close how much less computing power multicast takes.

    Make no mistake, multicast is broken by choice. Working multicast is “contempt of business model”, it would cannibalize CDN profits to become as free as unicast.

    the same systems to produce effectively the same improvements.

    One crucial distinction is that you as an individual, will Zuck’s permission to use their system, in their way, in their rules.

    And of course by “Zuck” I mean, “the cloud” aka “someone else’s computer”, which was not needed if multicast did just work, another enforced cloud dependency

    1/16 of all IPv4 addresses were reserved for PUBLIC USE but they remain firmly in the grasp of private hands, private hand that want you to pay the toll and obey their masters

    well just ask how the ip6 upgrade is going.

    My GPON FIBER ISP said “we’ll probably never implement IPv6”, even though every single piece of equipment on their network supports it, even their horrible rebadged Huwawei routers

    It won’t work and it will keep not working until we make them.