diff options
Diffstat (limited to 'usr.sbin/traceroute6')
| -rw-r--r-- | usr.sbin/traceroute6/traceroute6.8 | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/usr.sbin/traceroute6/traceroute6.8 b/usr.sbin/traceroute6/traceroute6.8 index 7a13f3a..99d8448 100644 --- a/usr.sbin/traceroute6/traceroute6.8 +++ b/usr.sbin/traceroute6/traceroute6.8 @@ -1,4 +1,4 @@ -.\" $KAME: traceroute6.8,v 1.9 2002/08/30 03:56:20 onoe Exp $ +.\" $KAME: traceroute6.8,v 1.10 2004/06/06 12:35:15 suz Exp $ .\" .\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. .\" All rights reserved. @@ -35,7 +35,7 @@ .\" .Sh NAME .Nm traceroute6 -.Nd "print the route IPv6 packets will take to the destination" +.Nd "print the route IPv6 packets will take to a network node" .\" .Sh SYNOPSIS .Nm @@ -69,6 +69,19 @@ .Ek .\" .Sh DESCRIPTION +.Nm +uses the IPv6 protocol hop limit field to elicit an ICMPv6 TIME_EXCEEDED +response from each gateway along the path to some host. +.Pp +The only mandatory parameter is the destination host name or IPv6 address. +The default probe datagram carries 12 bytes of payload, +in addition to the IPv6 header. +The size of the payload can be specified by giving a length +.Po in bytes +.Pc +after the destination host name. +.Pp +Other options are: .Bl -tag -width Ds .It Fl d Debug mode. @@ -86,7 +99,8 @@ Normally .Nm prints only hostnames if .It Fl m Ar hoplimit -Specify maximum hoplimit. +Specify maximum hoplimit, up to 255. +The default is 30 hops. .Fl n is not specified, and only numeric addresses if .Fl n @@ -108,6 +122,29 @@ Be verbose. .It Fl w Ar waittime Specify the delay time between probes. .El +.Pp +This program prints the route to the given destination and the round-trip +time to each gateway, in the same manner as traceroute. +.Pp +Here is a list of possible annotations after the round-trip time for each gateway: +.Pp +.Bl -hang -offset indent +.It !N +Destination Unreachable - No Route to Host. +.It !P +Destination Unreachable - Administratively Prohibited. +.It !S +Destination Unreachable - Not a Neighbour. +.It !A +Destination Unreachable - Address Unreachable. +.It ! +This is printed if the hop limit is <= 1 on a port unreachable message. +This means that the packet got to the destination, +but that the reply had a hop limit that was just large enough to +allow it to get back to the source of the traceroute6. +This was more interesting in the IPv4 case, +where some IP stack bugs could be identified by this behaviour. +.El .\" .Sh RETURN VALUES The |
