IPv6

IPv6 is the version 6 of IP (Internet Protocol). It is a new Internet Protocol defined for addressing problems such as a shortage of IPv4 addresses.

While the length of an IPv4 address is 32 bits, the length of an IPv6 address is 128 bits which is 4 times longer than that. Therefore, the total number of addresses that IPv6 can provide is 2 to the 96th power of that of IPv4.

Each IP address is displayed on amsh as follows.

amnimo$ show interface 
eth0: state UP mtu 1500
mac e8:1b:4b:00:30:01
ipv4 192.168.0.254/24
ipv6 fe80::ea1b:4bff:fe00:3001/64
lan0: state UP mtu 1500
mac e8:1b:4b:00:31:01
lan1: state DOWN mtu 1500
mac e8:1b:4b:00:31:01
lan2: state DOWN mtu 1500
mac e8:1b:4b:00:31:01
lan3: state DOWN mtu 1500
mac e8:1b:4b:00:31:01
br0: state UP mtu 1500
mac e8:1b:4b:00:31:01
ipv4 192.168.1.254/24
ipv4 172.16.0.1/16
ipv6 fe80::ea1b:4bff:fe00:3101/64

Reference

IPv4