control/diagnose IPv6 Neighbor Discovery Protocol
command manipulates the address mapping
table used by the Neighbor Discovery Protocol (NDP).
- Repeat -a (dump NDP entries)
every wait seconds.
- Dump the currently existing NDP entries. The following
information will be printed:
- The IPv6 address of the neighbor.
- Linklayer Address
- The linklayer address of the neighbor. If the address
is not available, it will be displayed as
- The network interface associated with the neighbor
- The time until expiry of the entry. If the entry is
marked “permanent”, it will never expire.
- The state of the neighbor cache entry, as a single
- Unknown state (should never happen).
- Flags on the neighbor cache entry, in a single letter.
They are: local (‘l’), Router (‘R’) and
proxy neighbor advertisement (‘p’). This field may be
followed by a decimal number, representing the number of NS probes the
node has sent during the current state.
- Erase all the NDP entries.
- Delete the specified NDP entry.
- Parse entries from file to
be inserted in the neighbor cache. See the -s
option for a description of the file format.
- View ND information for the specified interface.
- Do not try to resolve numeric addresses to hostnames.
- Register an NDP entry for the node called nodename with the
Ether address ether_addr. The Ethernet address is given as six hexadecimal
bytes separated by colons. 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 an ND
Proxy server, responding to requests for
nodename even though the node address is
not its own.
- Print a timestamp on each entry, making it possible to
merge output with
tcpdump(8). Most useful
when used with -A.
- Select the routing domain.
utility exits 0 on success,
and >0 if an error occurs.
command first appeared in the WIDE
Hydrangea IPv6 protocol stack kit.