1. The successor of IPv4

2. What is IPv6 Disadvantages Why replace IPv4 with IPv6 Why are we still using IPv4 and when will we switch IPv6

3. What is IPv6 Scalability IPv6 has 128-bit address space compared to IPv4's 32-bit address space 655,570,793,348,866,943,898,599 vs 4,300,000,000 avalible adresses (estimated 6.7 billion people on earth) Security It includes encryption of packets and authentication of the sender of packets Consideration to realtimeness To implement better support for realtime traffic, IPv6 includes flowlabel to utilize QOS Plug and play Most hosts can be configured automatically Clearer spec and optimization Removes minor flaws/obsolete items of IPv4

4. Disadvantages Larger overhead 21DA:D3:0:2F3B:02AA:FF:FE28:9C5A VS 140.123.111.232 But the header can be compressed Hard to set a date/time to switch We can change one step at the time (most recent OS support IPv6) IPv6 is already old - why not wait for something even better IPv6 is still evolving – no “better” standard avalible

5. Why replace IPv4 with IPv6 Larger address space 128 bits long versus 32 bits in IPv4 No need for NAT or Subnetting Autoconfiguration Host can be configured automatically when connected Multicast No more avalible IP`s We will proably run out of IP adresses in 2010

6. What is IPv6 Disadvantages Why replace IPv4 with IPv6 Why are we still using IPv4 and when will we switch http://www.ipv6.org/ http://www.itojun.org/v6/v6faq.html http://www.linuxguiden.no/index.php/IPv6