May 26, 2018

Implementation of IPv6 Neighbor Discovery proxy

The ndproxy4 kernel module implements IPv6 Neighbor Discovery proxying with many options to handle several use-cases.

It replies to a neighbor solicitation with a specific neighbor advertisement, in order to let the PE uplink router send further packets to a CPE downlink router, that may or may not be the same node that the one which runs ndproxy.

The main difference with the ndp8 command-line tool is that, with ndproxy4, the host running ndp can be used only to redirect packets to another IPv6 internal router, for instance a dedicated one with hardware support of IPv6 routing processes.

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