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A ipv6 node is defined by its ip address – Freescale Semiconductor TWR-MCF52259-Ethenet User Manual

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IP

IP - Internet Protocol

The IP defines how a network of more then 2 devices is formed.

IP

is the network Layer

.

IPv4 uses 32 bit addressing
IPv6 uses 128 bit addressing

A IPv4

node is defined by its IP address

, and subnet mask.

IPv4 sample address 192.168.1.0 subnet 255.255.255.0

A IPv6 node is defined by its IP address

2001:0DB8:0000:0000:0000:0000:1428:57ab