Subnet Mask: We used to do subnet masks in IPv4 with notation like 255.255.255.0, but in IPv6, while we still do subnetting, the notation is different in two ways.

Working with IPv6 addresses means working with hex. ... Just for fun, the IPv4 address 192.168.213.84 written in IPv6-style hexadecimal notation is c0a8:d554.

And address values are separated by dots in units of 8 bits, but in IPv6, since they are delimited by colons in units of 16 bits 2001: 0 db 8: bd 05: 01 d 2: 288 a: 1 fc 0: 0001: 10ee I will write ...