A packet sent to a multicast address is delivered to all interfaces identified by that address. A packet sent to an anycast address is delivered to one of the interfaces identified by that address.Īn anycast address identifies a set of interfaces (typically belonging to different nodes). Add The IPv6 Compression Widget On Your Website. The most common form of IPv6 address compression involves the elimination of leading zeros in each 16-bit block of the address and the substitution of consecutive blocks of zeros with a double colon ('::'). Free tool to compress or expand an IPv6 address. However, there are two rules we can apply to reduce the number. Global unicast addresses are globally routable and reachable on the IPv6 portion of the Internet.Ī prefix for link local addresses is always FE80::/64 with the interface ID be 64-bit length.Ī multicast address identifies multiple interfaces (typically belonging to different nodes). In some cases, it may be desirable to compress the representation of an IPv6 address to make it more concise and easier to work with. The ideal method of representing IPv6 address is groups of eight hextet (32 hexadecimal digits). A packet sent to a unicast address is delivered to the interface identified by that address.įor the Unicast IPv6 Addresses, there are many types: Global unicast addresses, Link local addresses etc. The final compression method removes the leading zeros and uses the double colon (::) to provide the shortest IPv6 notation. In general, there are three types of IPv6 address: Unicast IPv6 Addresses, Multicast IPv6 Addresses and Anycast IPv6 Addresses.Īn unicast address identifies a single interface within the scope of the type of unicast address.

Ipv6 compression rules