dear,there is no class n ipv6the ipv4 has classes for the efficient use on number of host n network bits.in ipv4 there are only 4.3 billion of the 6.5 billion population so we need to care that it should be allocated efficientlybut n ipv6 there are 3...
In ipv6 router interface site local ip add is analogous to private ip add in ipv4. the site local ip add is used to communicate witin the domain or site.for communicating outside the site it uses global unicast address...... wich is analogous to glob...