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kris 2000-07-05 09:37:52 +00:00
parent cedfd0750b
commit c8b7610f71
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sbin/ping6/ping6.8
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@ -1,3 +1,5 @@
.\" $KAME: ping6.8,v 1.22 2000/05/31 17:00:07 itojun Exp $
.\"
.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
.\" All rights reserved.
.\"
@ -25,7 +27,6 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id: ping6.8,v 1.4 1999/10/07 05:29:03 itojun Exp $
.\" $FreeBSD$
.\"
.Dd May 17, 1998
@ -37,45 +38,93 @@
.Tn ICMPv6 ECHO_REQUEST
packets to network hosts
.Sh SYNOPSIS
.Nm
.Op Fl AdEfnqRrvw
.Nm ping6
.\" without ipsec, or new ipsec
.Op Fl dfHnNqRvw
.\" old ipsec
.\" .Op Fl AdEfnNqRvw
.Bk -words
.Op Fl a Ar addrtype
.Ek
.Bk -words
.Op Fl b Ar bufsiz
.Ek
.Bk -words
.Op Fl c Ar count
.Ek
.Bk -words
.Op Fl h Ar hoplimit
.Ek
.Bk -words
.Op Fl I Ar interface
.Ek
.Bk -words
.Op Fl i Ar wait
.Ek
.Bk -words
.Op Fl l Ar preload
.Ek
.Bk -words
.Op Fl p Ar pattern
.Ek
.Bk -words
.\" new ipsec
.Op Fl P Ar policy
.Ek
.Bk -words
.Op Fl S Ar sourceaddr
.Ek
.Bk -words
.Op Fl s Ar packetsize
.Ek
.Bk -words
.Op Ar hops...
.Ek
.Bk -words
.Ar host
.Ek
.Sh DESCRIPTION
.Nm
uses the
.Tn ICMPv6
protocol's mandatory
.Tn ICMP6_ECHO_REQUEST
datagram to elicit an
.Tn ICMP6_ECHO_REPLY
from a host or gateway.
.Tn ICMP6_ECHO_REQUEST
datagrams (``pings'') have an IPv6 header,
and
.Tn ICMPv6
header formatted as documented in RFC2463.
The options are as follows:
.Bl -tag -width Ds
.It Fl A
Enables transport-mode IPsec authentication header.
(experimental)
.\" old ipsec
.\" .It Fl A
.\" Enables transport-mode IPsec authentication header
.\" .Pq experimental .
.It Fl a Ar addrtype
Generate ICMPv6 Node Information Node Addresses query, rather than echo-request.
.Ar addrtype
must be a string constructed of the following charaters.
must be a string constructed of the following characters.
.Bl -tag -width Ds -compact
.It Ic a
requires all the responder's unicast addresses.
requests all the responder's unicast addresses.
If the charater is ommited,
only those addresses which belong to the interface which has the
responder's address are required.
responder's address are requests.
.It Ic c
requests responder's IPv4-compatible and IPv4-mapped addresses.
.It Ic g
requires responder's global-scope addresses.
requests responder's global-scope addresses.
.It Ic s
requires responder's site-local addresses.
requests responder's site-local addresses.
.It Ic l
requires responder's link-local addresses.
requests responder's link-local addresses.
.It Ic A
requires responder's anycast addresses.
Without this character, the responder
will return unicast addresses only.
With this character, the responder
will return anycast addresses only.
requests responder's anycast addresses.
Without this character, the responder will return unicast addresses only.
With this character, the responder will return anycast addresses only.
Note that the specification does not specify how to get responder's
anycast addresses.
This is an experimental option.
@ -92,9 +141,9 @@ packets.
Set the
.Dv SO_DEBUG
option on the socket being used.
.It Fl E
Enables transport-mode IPsec encapsulated security payload.
(experimental)
.\" .It Fl E
.\" Enables transport-mode IPsec encapsulated security payload
.\" .Pq experimental .
.It Fl f
Flood ping.
Outputs packets as fast as they come back or one hundred times per second,
@ -111,6 +160,11 @@ Only the super-user may use this option.
.Bf -emphasis
This can be very hard on a network and should be used with caution.
.Ef
.It Fl H
Specifies to try reverse-lookup of IPv6 addresses.
The
.Nm
command does not try reverse-lookup unless the option is specified.
.It Fl h Ar hoplimit
Set the IPv6 hoplimit.
.It Fl I Ar interface
@ -137,6 +191,19 @@ Only the super-user may use this option.
.It Fl n
Numeric output only.
No attempt will be made to lookup symbolic names for host addresses.
.It Fl N
Probe node information multicast group
.Pq Li ff02::2:xxxx:xxxx .
.Ar host
must be string hostname of the target
.Pq must not be a numeric IPv6 address .
Node information multicast group will be computed based on given
.Ar host ,
and will be used as the final destination.
Since node information multicast group is a link-local multicast group,
destination link needs to be specified by
.Fl I
option.
.It Fl p Ar pattern
You may specify up to 16
.Dq pad
@ -151,36 +218,36 @@ flag,
.Nm
prints out any ICMP error messages caused by its own ECHO_REQUEST
messages.
.\" new ipsec
.It Fl P Ar policy
.Ar policy
specifies IPsec policy to be used for the probe.
.It Fl q
Quiet output.
Nothing is displayed except the summary lines at startup time and
when finished.
.It Fl R
Record route.
Includes the
.Tn RECORD_ROUTE
option in the
.Tn ECHO_REQUEST
packet and displays
the route buffer on returned packets.
Note that the IP header is only large enough for nine such routes;
the
.Xr traceroute 8
command is usually better at determining the route packets take to a
particular destination.
Many hosts ignore or discard the
.Tn RECORD_ROUTE
option.
.It Fl r
Bypass the normal routing tables and send directly to a host on an attached
network.
If the host is not on a directly-attached network, an error is returned.
This option can be used to ping a local host through an interface
that has no route through it
Make the kernel believe that the target
.Ar host
.Po
e.g., after the interface was dropped by
.Xr routed 8
.Pc .
or the first
.Ar hop
if you specify
.Ar hops
.Pc
is reachable, by injecting upper-layer reachability confirmation hint.
The option is meaningful only if the target
.Ar host
.Pq or the first hop
is a neighbor.
.It Fl S Ar sourceaddr
Specifies the source address of request packets.
The source address must be one of the unicast addresses of the sending node.
If the outgoing interface is specified by the
.Fl I
option as well,
.Ar sourceaddr
needs to be an address assigned to the specified interface.
.It Fl s Ar packetsize
Specifies the number of data bytes to be sent.
The default is 56, which translates into 64
@ -206,12 +273,18 @@ has no effect if
is specified.
.It Fl W
Same as
.Fl w .
This option was remained for backward compatibility.
.Fl w ,
but with old packet format based on 03 draft.
This option is present for backward compatibility.
.Fl s
has no effect if
.Fl w
is specified.
.It Ar hops
IPv6 addresses for intermediate nodes,
which will be put into type 0 routing header.
.It Ar host
IPv6 adddress of the final destination node.
.El
.Pp
When using
@ -310,15 +383,9 @@ using the
option of
.Nm Ns .
.Sh RETURN VALUES
The
.Nm
command returns an exit status of zero if at least one response was
heard from the specified
.Ar host ;
a status of two if the transmission was successful but no responses
were received; or another value
.Pq from Aq Pa sysexits.h
if an error occurred.
returns 0 on success (the host is alive),
and non-zero if the arguments are incorrect or the host is not responding.
.Sh SEE ALSO
.Xr netstat 1 ,
.Xr ifconfig 8 ,
@ -326,6 +393,20 @@ if an error occurred.
.Xr routed 8 ,
.Xr traceroute 8 ,
.Xr traceroute6 8
.Rs
.%A A. Conta
.%A S. Deering
.%T "Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification"
.%N RFC2463
.%D December 1998
.Re
.Rs
.%A Matt Crawford
.%T "IPv6 Node Information Queries"
.%N draft-ietf-ipngwg-icmp-name-lookups-05.txt
.%D October 22, 1999
.%O work in progress material
.Re
.Sh HISTORY
The
.Nm ping