IPv6 Tutorial - RIPE 64

IPv6 extension headers -Destination option• If we want to add functionality to IPv6 in the future, wecould add new extension headers• This would however use up more of the 255 available“Next header” codes• It would require that both sender and receiverunderstands the code• Requires that intermediate node such as firewallsunderstands the code• Instead we can use the “Destination option” extenstionheader• “Undefined” header to be used in the future30