.\"	$OpenBSD: traceroute6.8,v 1.23 2014/04/18 16:48:19 florian Exp $
.\"	$KAME: traceroute6.8,v 1.9 2002/08/30 03:56:20 onoe Exp $
.\"
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.Dd $Mdocdate: April 18 2014 $
.Dt TRACEROUTE6 8
.Os
.\"
.Sh NAME
.Nm traceroute6
.Nd print the route IPv6 packets take to network host
.\"
.Sh SYNOPSIS
.Nm traceroute6
.Op Fl AcDdIlnSv
.Op Fl f Ar firsthop
.Op Fl m Ar hoplimit
.Op Fl p Ar port
.Op Fl q Ar probes
.Op Fl s Ar src
.Op Fl V Ar rtable
.Op Fl w Ar waittime
.Ar host
.Op Ar datalen
.\"
.Sh DESCRIPTION
The
.Nm
utility details the route IPv6 packets take to reach a network host.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl A
Look up the AS number for each hop address.
Uses the DNS service described at
.Lk http://www.team-cymru.org/Services/ip-to-asn.html .
.It Fl c
Do not increment the destination port number in successive UDP packets.
Rather, all UDP packets will have the same destination port, as set via the
.Fl p
flag (or 33434 if none is specified).
.It Fl D
Dump the packet data to standard error before transmitting it.
.It Fl d
Debug mode.
.It Fl f Ar firsthop
Specify how many hops to skip.
.It Fl I
Use ICMP6 ECHO instead of UDP datagrams.
.It Fl l
Display the hop limit value of the returned packet.
This is useful for checking for asymmetric routing.
.It Fl m Ar hoplimit
Specify a maximum hoplimit.
.It Fl n
Do not resolve numeric addresses.
.It Fl p Ar port
Set UDP port number to
.Ar port .
.It Fl q Ar probes
Set the number of probes per hop count to
.Ar probes .
.It Fl S
Print how many probes were not answered for each hop.
.It Fl s Ar src
Specify the source IPv6 address to be used.
.It Fl v
Be verbose.
.It Fl V Ar rtable
Set the routing table to be used.
.It Fl w Ar waittime
Specify the time delay between probes.
.El
.Sh EXIT STATUS
.Ex -std traceroute6
.\"
.Sh SEE ALSO
.Xr netstat 1 ,
.Xr ping 8 ,
.Xr ping6 8 ,
.Xr traceroute 8
.\"
.Sh HISTORY
The
.Nm
command first appeared in the WIDE Hydrangea IPv6 protocol stack kit.