What is IPv6?

Expansion of address space - 32bit -> 128bit
32bit: 4.3 billion nodes maximum
not sufficient, blocking new IP-based applications from appearing
128bit: 3.4 x 10^38 nodes maximum
Make new technologies mandatory
IPv4: designed in 1970's 
IPv6: designed in 1990's 
autoconfiguration, multicast, security, ...

Why? - IPv4 address space is filling up, "everything over IP" movement, NAT is killing us all
When? - Already there, so you should better be prepared
How? - (next slide)