ndp(7P)

NAME
     ndp - Neighbor Discovery Protocol

DESCRIPTION
     NDP is a protocol used to dynamically map between IPv6 Internet and
     device addresses such as Ethernet addresses.  It is used by all the
     Ethernet interface drivers.  Although this man page describes its use
     with Ethernet, it is not specific to Ethernet.

     NDP caches Internet-Ethernet address mappings.  When an interface
     requests a mapping for an address not in the cache, NDP queues the
     message which requires the mapping and multicasts a message on the
     associated network requesting the address mapping.  If a response is
     provided, the new mapping is cached and any pending message is
     transmitted.  Each address mapping has a timer associated with it and
     completed address mappings are aged.  The timer is reset each time the
     address mapping is updated by sending a packet to the Internet address to
     which the mapping belongs.  NDP will queue at most one packet while
     waiting for a mapping request to be responded to; only the most recently
     ``transmitted'' packet is kept.

     NDP entries may be added, deleted or changed with the ndps command.

SEE ALSO
     inet6(7F), ndp(1M), ndpd(1M), ifconfig(1M),