IPv6 has had two versions of private addressing - deprecated site-local addressing and the current Unique Local Unicast Addresses (ULAs). Having had some involvement in the site-local deprecation discussions and the subsequent ULA discussions in the IETF, starting in 2002, I've since seen several examples of ULAs being incorrectly treated as though they were the exact IPv6 equivalent of
IPv6 link-local addresses are a special scope of address which can be used only within the context of a single layer two domain. Packets sourced from or destined to a link-local address are not forwarded out of the layer two domain by routers. These addresses are useful for establishing communication across a link in the absence of a globally IPv6-enabled network interfaces usually have more than one IPv6 address, for example, a link-local and a global address. They may also have temporary addresses that change after a certain lifetime has expired. IPv6 introduces the concepts of address scope and selection preference, yielding multiple choices for source and destination address Routing protocols in IPv6 use the link-local addresses of routers as next-hop addresses so again, the communication based on link-local addresses must actually be possible. However, when you have a look at an IPv6 routing table, a network together with a link-local next-hop address will always be identified together with the outgoing interface: Interestingly, IPv6 Link Local Address has been actively utilized since its creation, its capabilities and functionality has only garnered attention throughout the last couple of years. Regardless of your interest or experience in computer networks and backend infrastructure, understanding the role and potential of this widely used network RFC 4291 IPv6 Addressing Architecture February 2006 Currently, IPv6 continues the IPv4 model in that a subnet prefix is associated with one link. Multiple subnet prefixes may be assigned to the same link. 2.2.Text Representation of Addresses There are three conventional forms for representing IPv6 addresses as text strings: 1. The preferred form is x:x:x:x:x:x:x:x, where the 'x's are one to In IPv6 Link-Local addresses are mandatory addresses according to RFC 4291. This means that all interfaces are required to have at least one Link-Local unicast address from the address block fe80::/10, which has been reserved for link-local unicast addressing. The actual link-local addresses are though assigned with the prefix fe80::/64.
IPv6 has had two versions of private addressing - deprecated site-local addressing and the current Unique Local Unicast Addresses (ULAs). Having had some involvement in the site-local deprecation discussions and the subsequent ULA discussions in the IETF, starting in 2002, I've since seen several examples of ULAs being incorrectly treated as though they were the exact IPv6 equivalent of
IPv6 Link Local Address is the address used between Point-to-Point interfaces and provide IPv6 Neigbor Discovery. Point-to-point interfaces do not need a Global IPv6 Addres to communicate each other. Instead, they use IPv6 Link Local Addresses for point-to-point communication.And Router do not forward these Link-Local Addresses because they are
IPv6 Link Local addresses are used by devices for communicating with other nodes on the same link. The scope of an IPv6 Link Local address is the local link. IPv6 Link Local addresses are auto-generated and many international technology leaders generate IPv6 Link Local addresses from MAC Address of the interface.
Interestingly, IPv6 Link Local Address has been actively utilized since its creation, its capabilities and functionality has only garnered attention throughout the last couple of years. Regardless of your interest or experience in computer networks and backend infrastructure, understanding the role and potential of this widely used network