Commercial speech, however, is less protected by the First Amendment than political speech, and is therefore subject to greater regulation. The Free Press Clause protects publication of information and opinions, and applies to a wide variety of media.
In computer networking, multicast (one-to-many or many-to-many distribution) is group communication where information is addressed to a group of destination computers simultaneously.
Any Source Multicast (ASM), in which a receiver joins a multicast group, and receives traffic from any senders that send to that group. Source-Specific Multicast (SSM), in which a receiver explicitly joins to a (source, group) pairing. Multicast Addressing. For IPv4, multicast addresses are in the range 224.0.0.0 to 239.255.255.255 inclusive. 1  Addresses within 232.0.0.0/8 are reserved for SSM usage. Addresses in 239.0.0.0/8 are ASM addresses defined for varying sizes of limited scope. Addresses within 224.0.0.0/24 are considered link-local and are forwarded between subnets.