IEEE EUI-64 Identifiers
One affair that you will run into bound in alive with IPv6 is the EUI-64 identifier for an interface. The EUI-64 identifier is about an addendum of the already accustomed 48-bit MAC abode frequently acclimated on Ethernet interfaces. RFC 4291 defines a way of application this EUI-64 abode to body a different IPv6 abode automatically for an interface.