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Various address reachability scope on IPv6 network

IPv6 comes with various IP address terminology which can be assign to a system. Lets simply clarify their name and scope of reachability respect to IPv6.


 In general it has four address type one of which is depreciated by RFC standard.

1. Link Local Address (LLA)
Description: Link-local address can be access in directly connected router. Its basically same as IPv4 private address. 
2. Unique Local Address (ULA)
Description:Unique Local Address(ULA), they will often be advertised by IPv6 home gateways for subscriber local use only, and won't be reachable anywhere outside the home. Unique Local Address (ULA), which is an address that is used for local communication in a site – within a company, within a campus or within a set of networks in branch offices.

3. Site Local Address
Description: Deprecated.

4. Global Unicast Address
Description: Global unicast address is basically reachable from anywhere in internet. IPv6 unicast global addresses are similar to IPv4 public addresses.




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