27 Oct 2025
IPv6
ipv6
- Welp, ipv4 got over. So we needed more addresses.
- 128 bits. Much larger than 32 bits of ipv4.
Multicasting
- Unlike ipv4, this doesn't have a generic broadcast address for a subnet.
- Just as IPv4 has 255.255.255.255 as the global subnet broadcast address, here the equivalent is ff02::1.
- It is also possible to have a global multicast.
- The first 64 bits are global address space (smallest subnet size).
