Migrating to IPv6

Making the Lawyers Happy

Background

The Need for a New IP

Internet Growth

IPv4 Route Scaling Problems

Other Enhancements

Details

Growing the IP Address

IPv6 Address Structure

IPv6 Address Format

IPv6 Address Types

Unicast Address Scopes

Multicast Address Scopes

Multicast vs. Anycast

Multicast Delivery

Anycast Delivery

Comments on Anycast

IPv6 Datagram

IPv4 Datagram (for comparison)

Flow Label

Extension Headers

Types of Extension Headers

Fragmentation

IPv6 Security

Authentication

Confidentiality

Security Encapsulation

ICMP for IPv6

Neighbor Discovery

Address Resolution

Neighbor Solicitation Message

Neighbor Solicitation Notes

Address Resolution

Neighbor Advertisement

Router Discovery

Redirection

Neighbor Unreachability

Address Autoconfiguration

Link-Local Addresses

Detecting Duplicate Addresses

The Future

IPv6 is Designed for Migration

Embedded IPv4 Addresses

Aspects of Migration

Dual Stack Host

Tunneling Across IPv4 Networks

Automatic Tunnels

Configured Tunnels

Header Translation

Example Migration Plan

Migrating Other Networks