Auto Configuration - Linux

IPv6 has two forms of address autoconfiguration. The first is called stateless auto-configuration, and the second is stateful autoconfiguration. It is important to note that IPv6 addresses are assigned to interfaces, not hosts, and unlike IPv4, interfaces can be assigned one or more addresses and can even function with no address at all. Router advertisement, part of ND discussed, is the mechanism used for stateless autoconfiguration .A particular interface can self-assign a link-local address. This link-local address is likely to be unique for a link-local scope, but it can be checked using duplicate address detection. This algorithm works by sending out neighbor solicitations and receiving neighbor advertisements. Another aspect of stateless autoconfiguration uses the router advertisement message in the ND protocol . A host is informed that it is advised to use stateful autoconfiguration by a flag bit in the router discovery message.

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