ndp man page on NetBSD

Man page or keyword search:  
man Server   9087 pages
apropos Keyword Search (all sections)
Output format
NetBSD logo
[printable version]

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

NAME
     ndp — control/diagnose IPv6 neighbor discovery protocol

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

DESCRIPTION
     The ndp command manipulates the address mapping table used by the Neigh‐
     bor Discovery Protocol (NDP).

     -a	     Dump the currently existing NDP entries.  The following informa‐
	     tion will be printed:

	     Neighbor	 IPv6 address of the neighbor.

	     Linklayer Address
			 Linklayer address of the neighbor.  It could be
			 “(incomplete)” when the address is not available.

	     Netif	 Network interface associated with the neighbor cache
			 entry.

	     Expire	 The time until expiry of the entry.  The entry could
			 become “permanent”, in which case it will never
			 expire.

	     S		 State of the neighbor cache entry, as a single let‐
			 ter:

			 N	 Nostate
			 W	 Waitdelete
			 I	 Incomplete
			 R	 Reachable
			 S	 Stale
			 D	 Delay
			 P	 Probe
			 ?	 Unknown state (should never happen).

	     Flags	 Flags on the neighbor cache entry, in a single let‐
			 ter.  They are: Router, proxy neighbor advertisement
			 (“p”).	 The field could be followed by a decimal num‐
			 ber, which means the number of NS probes the node has
			 sent during the current state.

     -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	     Shows the default interface used as the default route when there
	     is no default router.

     -I interface
	     Specifies the default interface to be used when there is no
	     interface specified even though required.

     -I delete
	     The current default interface will be deleted from the kernel.

     -i interface [expressions ...]
	     View ND information for the specified interface.  If additional
	     arguments expressions are given, ndp sets or clears the flags or
	     variables for the interface as specified in the expression.  Each
	     expression should be separated by white spaces or tab characters.
	     Possible expressions are as follows.  Some of the expressions can
	     begin with the special character ‘-’, which means the flag speci‐
	     fied in the expression should be cleared.	Note that you need --
	     before -foo in this case.

	     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.  Note that the kernel
		     does not accept Router Advertisement messages, even if
		     the flag accept_rtadv is on, unless either the
		     net.inet6.ip6.accept_rtadv variable is non-0, or the flag
		     override_rtadv is on.  This flag is set to 1 by default.
	     override_rtadv
		     Specify whether or not to override the
		     net.inet6.ip6.accept_rtadv variable.  If the flag is on,
		     then it will suffice to set the flag accept_rtadv to make
		     the kernel accept Router Advertisement messages on the
		     interface.	 This flag is set to 0 by default.
	     prefer_source
		     Prefer addresses on the interface as candidates of the
		     source address for outgoing packets.  The default value
		     of this flag is off.  For more details about the entire
		     algorithm of source address selection, see the
		     IMPLEMENTATION file supplied with the KAME kit.
	     disabled
		     Disable IPv6 operation on the interface.  When disabled,
		     the interface discards any IPv6 packets received on or
		     being sent to the interface.  In the sending case, an
		     error of ENETDOWN will be returned to the application.
		     This flag is typically set automatically in the kernel as
		     a result of a certain failure of Duplicate Address Detec‐
		     tion.  While the flag can be set or cleared by hand with
		     the ndp command, it is not generally advisable to modify
		     this flag manually.
	     basereachable=(number)
		     Specify the BaseReachbleTimer on the interface in mil‐
		     lisecond.
	     retrans=(number)
		     Specify the RetransTimer on the interface in millisecond.
	     curhlim=(number)
		     Specify the Cur Hop Limit on the interface.

     -n	     Do not try to resolve numeric addresses to hostnames.

     -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 on each entry, making it possible to merge output
	     with tcpdump(8).  Most useful when used with -A.

RETURN VALUES
     The ndp command will exit with 0 on success, and non-zero on errors.

SEE ALSO
     arp(8)

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

BSD			       November 6, 2009				   BSD
[top]
                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
More information is available in HTML format for server NetBSD

List of man pages available for NetBSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net