payload length – IPv4’s equivalent is the Total Length field.This also helps with QoS, allowing us to prioritize traffic flows rather than individual packets. flow label – No equivalent in IPv4, this field allows a packet to be labeled as part of a particular flow.The “traffic class” name comes from this field’s ability to allow us to assign levels of importance to a packet via QoS. traffic class – In IPv4, this was the Type Of Service (TOS) field.QoS capabilities with IPv6 are far greater, due to many more values within the IPv6 header.DHCP is still available, but IPv6 nodes can assign themselves an address without the help of a DHCP server via autoconfiguration.
