IPv6 ND Redirect Function
The last of the major responsibilities of the IPv6 ND protocol is the Redirect function. This is used by a router to inform a host of a better route to use for datagrams that have been sent to a particular destination. An argument could be made that the Redirect function should be part of the host-router group since it represents a form of communication between routers and regular hosts. However, it is somewhat different from the other discovery functions, and so the standard treats it separately.
Routers are responsible for detecting situations where a host on the local network has made an inefficient first-hop routing decision, and then attempting to correct it. For example, consider a network that has two routers on ...
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