diff options
Diffstat (limited to 'sbin/ping6/ping6.8')
| -rw-r--r-- | sbin/ping6/ping6.8 | 132 |
1 files changed, 61 insertions, 71 deletions
diff --git a/sbin/ping6/ping6.8 b/sbin/ping6/ping6.8 index 554bf2b..84a51ed 100644 --- a/sbin/ping6/ping6.8 +++ b/sbin/ping6/ping6.8 @@ -1,4 +1,4 @@ -.\" $KAME: ping6.8,v 1.43 2001/06/28 06:54:29 suz Exp $ +.\" $KAME: ping6.8,v 1.58 2003/06/20 12:00:22 itojun Exp $ .\" .\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. .\" All rights reserved. @@ -40,9 +40,9 @@ packets to network hosts .Sh SYNOPSIS .Nm .\" without ipsec, or new ipsec -.Op Fl dfHnNqRtvwW +.Op Fl dfHmnNqtvwW .\" old ipsec -.\" .Op Fl AdEfnNqRtvwW +.\" .Op Fl AdEfmnNqRtvwW .Bk -words .Op Fl a Ar addrtype .Ek @@ -53,6 +53,9 @@ packets to network hosts .Op Fl c Ar count .Ek .Bk -words +.Op Fl g Ar gateway +.Ek +.Bk -words .Op Fl h Ar hoplimit .Ek .Bk -words @@ -78,7 +81,7 @@ packets to network hosts .Op Fl s Ar packetsize .Ek .Bk -words -.Op Ar hops...\& +.Op Ar hops ... .Ek .Bk -words .Ar host @@ -86,7 +89,7 @@ packets to network hosts .Sh DESCRIPTION The .Nm -utility uses the +command uses the .Tn ICMPv6 protocol's mandatory .Tn ICMP6_ECHO_REQUEST @@ -103,14 +106,14 @@ The options are as follows: .\" old ipsec .\" .It Fl A .\" Enables transport-mode IPsec authentication header -.\" (experimental). +.\" .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 characters. .Bl -tag -width Ds -compact .It Ic a -requests all the responder's unicast addresses. +requests unicast addresses from all of the responder's interfaces. If the character is omitted, only those addresses which belong to the interface which has the responder's address are requests. @@ -134,7 +137,7 @@ This is an experimental option. Set socket buffer size. .It Fl c Ar count Stop after sending -(and receiving) +.Pq and receiving .Ar count .Tn ECHO_RESPONSE packets. @@ -144,7 +147,7 @@ Set the option on the socket being used. .\" .It Fl E .\" Enables transport-mode IPsec encapsulated security payload -.\" (experimental). +.\" .Pq experimental . .It Fl f Flood ping. Outputs packets as fast as they come back or one hundred times per second, @@ -152,7 +155,7 @@ whichever is more. For every .Tn ECHO_REQUEST sent a period -.Dq .\& +.Dq \&. is printed, while for every .Tn ECHO_REPLY received a backspace is printed. @@ -161,11 +164,16 @@ 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 g Ar gateway +Specifies to use +.Ar gateway +as the next hop to the destination. +The gateway must be a neighbor of the sending node. .It Fl H Specifies to try reverse-lookup of IPv6 addresses. The .Nm -utility does not try reverse-lookup unless the option is specified. +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 @@ -189,6 +197,16 @@ is specified, sends that many packets as fast as possible before falling into its normal mode of behavior. Only the super-user may use this option. +.It Fl m +By default, +.Nm +asks the kernel to fragment packets to fit into the minimum IPv6 MTU. +.Fl m +will suppress the behavior in the following two levels: +when the option is specified once, the behavior will be disabled for +unicast packets. +When the option is more than once, it will be disabled for both +unicast and multicast packets. .It Fl n Numeric output only. No attempt will be made to lookup symbolic names from addresses in the reply. @@ -197,12 +215,12 @@ Probe node information multicast group .Pq Li ff02::2:xxxx:xxxx . .Ar host must be string hostname of the target -(must not be a numeric IPv6 address). +.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 +outgoing interface needs to be specified by .Fl I option. .It Fl p Ar pattern @@ -222,26 +240,10 @@ specifies IPsec policy to be used for the probe. Quiet output. Nothing is displayed except the summary lines at startup time and when finished. -.It Fl R -Make the kernel believe that the target -.Ar host -(or the first -.Ar hop -if you specify -.Ar hops ) -is reachable, by injecting upper-layer reachability confirmation hint. -The option is meaningful only if the target -.Ar host -(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. +The source address must be one of the unicast addresses of the sending node, +and must be numeric. .It Fl s Ar packetsize Specifies the number of data bytes to be sent. The default is 56, which translates into 64 @@ -299,26 +301,13 @@ If duplicate packets are received, they are not included in the packet loss calculation, although the round trip time of these packets is used in calculating the round-trip time statistics. When the specified number of packets have been sent -(and received) +.Pq and received or if the program is terminated with a .Dv SIGINT , a brief summary is displayed, showing the number of packets sent and -received, and the minimum, mean, maximum, and standard deviation of +received, and the minimum, maximum, mean, and standard deviation of the round-trip times. .Pp -If -.Nm -receives a -.Dv SIGINFO -(see the -.Cm status -argument for -.Xr stty 1 ) -signal, the current number of packets sent and received, and the -minimum, mean, maximum, and standard deviation of the round-trip times -will be written to the standard output in the same format as the -standard completion message. -.Pp This program is intended for use in network testing, measurement and management. Because of the load it can impose on the network, it is unwise to use @@ -335,14 +324,12 @@ during normal operations or from automated scripts. .\" When a .\" .Ar packetsize .\" is given, this indicated the size of this extra piece of data -.\" (the default is 56). +.\" .Pq the default is 56 . .\" Thus the amount of data received inside of an IP packet of type .\" .Tn ICMP .\" .Tn ECHO_REPLY .\" will always be 8 bytes more than the requested data space -.\" (the -.\" .Tn ICMP -.\" header). +.\" .Pq the Tn ICMP header . .\" .Pp .\" If the data space is at least eight bytes large, .\" .Nm @@ -353,12 +340,12 @@ during normal operations or from automated scripts. .Sh DUPLICATE AND DAMAGED PACKETS The .Nm -utility will report duplicate and damaged packets. +command will report duplicate and damaged packets. Duplicate packets should never occur when pinging a unicast address, and seem to be caused by inappropriate link-level retransmissions. Duplicates may occur in many situations and are rarely -(if ever) +.Pq if ever a good sign, although the presence of low levels of duplicates may not always be cause for alarm. Duplicates are expected when pinging a broadcast or multicast address, @@ -369,7 +356,7 @@ Damaged packets are obviously serious cause for alarm and often indicate broken hardware somewhere in the .Nm packet's path -(in the network or in the hosts). +.Pq in the network or in the hosts . .Sh TRYING DIFFERENT DATA PATTERNS The (inter)network @@ -398,11 +385,10 @@ You can then examine this file for repeated patterns that you can test using the .Fl p option of -.Nm . +.Nm Ns . .Sh RETURN VALUES -The .Nm -utility returns 0 on success (the host is alive), +command returns 0 on success (the host is alive), and non-zero if the arguments are incorrect or the host is not responding. .Sh EXAMPLES Normally, @@ -451,11 +437,28 @@ ping6 -a agl dst.foo.com .Rs .%A Matt Crawford .%T "IPv6 Node Information Queries" -.%N draft-ietf-ipngwg-icmp-name-lookups-07.txt -.%D August 2000 +.%N draft-ietf-ipngwg-icmp-name-lookups-09.txt +.%D May 2002 .%O work in progress material .Re +.Sh HISTORY +The +.Xr ping 8 +command appeared in +.Bx 4.3 . +The +.Nm +command with IPv6 support first appeared in the WIDE Hydrangea IPv6 +protocol stack kit. +.Pp +IPv6 and IPsec support based on the KAME Project (http://www.kame.net/) stack +was initially integrated into +.Fx 4.0 .Sh BUGS +.Nm +is intentionally separate from +.Xr ping 8 . +.Pp There have been many discussions on why we separate .Nm and @@ -484,16 +487,3 @@ or .Fl 4 option (or something like those) to specify the particular address family. This essentially means that we have two different commands. -.Sh HISTORY -The -.Xr ping 8 -command appeared in -.Bx 4.3 . -The -.Nm -utility with IPv6 support first appeared in WIDE Hydrangea IPv6 protocol stack -kit. -.Pp -IPv6 and IPsec support based on the KAME Project (http://www.kame.net/) stack -was initially integrated into -.Fx 4.0 |
