DragonFly On-Line Manual Pages

NDP(8)                 DragonFly System Manager's Manual                NDP(8)

NAME
     ndp - control/diagnose IPv6 neighbor discovery protocol

SYNOPSIS
     ndp -a [-nt]
     ndp -A wait [-nt]
     ndp -c [-nt]
     ndp -d [-nt] hostname
     ndp -f [-nt] filename
     ndp -H
     ndp -I [delete | interface]
     ndp -i interface [flags...]
     ndp -p
     ndp -P
     ndp -r
     ndp -R
     ndp -s [-nt] nodename ether_addr [temp] [proxy]

DESCRIPTION
     The ndp utility manipulates the address mapping table used by Neighbor
     Discovery Protocol (NDP).

     -a      Dump the currently existing NDP entries.

     -A wait
             Repeat -a (dump NDP entries) every wait seconds.

     -c      Erase all the NDP entries.

     -d      Delete specified NDP entry.

     -f      Parse the file specified by filename.

     -H      Harmonize consistency between the routing table and the default
             router list; install the top entry of the list into the kernel
             routing table.

     -I [delete | interface]
             Shows or specifies the default interface used as the default
             route when there is no default router.  If no argument is given
             to the option, the current default interface will be shown.  If
             an interface is specified, the interface will be used as the
             default.  If a special keyword delete is specified, the current
             default interface will be deleted from the kernel.

     -i interface [flags...]
             View ND information for the specified interface.  If additional
             arguments flags are given, ndp sets or clears the specified flags
             for the interface.  Possible flags are as follows.  All of the
             flags can begin with the special character `-', which means the
             flag should be cleared.
             nud     turn on or off NUD (Neighbor Unreachability Detection) on
                     the interface.  NUD is usually turned on by default.
             accept_rtadv
                     Specify whether or not to accept Router Advertisement
                     messages received on the interface.  This flag is set by
                     the net.inet6.ip6.accept_rtadv sysctl variable.
             auto_linklocal
                     Specify whether or not to perform automatic link-local
                     address configuration on the interface.  This flag is set
                     by the net.inet6.ip6.auto_linklocal sysctl variable.

     -n      Do not try to resolve numeric address to hostname.

     -p      Show prefix list.

     -P      Flush all the entries in the prefix list.

     -r      Show default router list.

     -R      Flush all the entries in the default router list.

     -s      Register an NDP entry for a node.  The entry will be permanent
             unless the word temp is given in the command.  If the word proxy
             is given, this system will act as a proxy NDP server, responding
             to requests for hostname even though the host address is not its
             own.

     -t      Print timestamp for each entry, to make it possible to merge the
             output with tcpdump(1).  Most useful when used with -A.

EXIT STATUS
     The ndp utility exits 0 on success, and >0 if an error occurs.

SEE ALSO
     arp(8)

HISTORY
     The ndp utility first appeared in WIDE Hydrangea IPv6 protocol stack kit.

DragonFly 6.5-DEVELOPMENT        March 1, 2024       DragonFly 6.5-DEVELOPMENT