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na_traceroute6 - print the route IPv6 packets take to a
traceroute [ -dlnrv ] [ -f first_hop ] [ -m max_hops ] [
-p port ] [ -q nqueries ] [ -s src_addr ] [ -g gateway ] [
-w wait ] host [ data_size ]
The traceroute6 utility uses the IPv6 protocol hop limit
field to elicit an ICMPv6 TIME_EXCEEDED response from each
gateway along the path to some host.
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
(in bytes) after the destination host name.
Other options are:
- Debug mode.
Specify how many hops to skip in trace.
Specify intermediate gateway ( traceroute6 uses
- Print both host hostnames and numeric addresses.
Normally traceroute6 prints only hostnames if -n is
not specified, and only numeric addresses if -n is
Specify maximum hoplimit, up to 255. The default
is 30 hops.
- Do not resolve numeric address to hostname.
Set UDP port number to port.
Set the number of probe per hop count to nqueries.
- 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
src_addr specifies the source IPv6 address to be
- Be verbose.
Specify the delay time between probes.
This program prints the route to the given destination and
the round-trip time to each gateway, in the same manner as
Here is a list of possible annotations after the roundtrip
time for each gateway:
- Destination Unreachable - No Route to Host.
- Destination Unreachable - Administratively
- Destination Unreachable - Not a Neighbour.
- Destination Unreachable - Address Unreachable.
This program is intended for use in network testing, measurement
and management. It should be used primarily for
manual fault isolation. Because of the load it could
impose on the network, it is unwise to use traceroute6
during normal operations or from automated scripts.
- 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
When run from a vfiler context, (e.g. via the vfiler run
command), traceroute6 operates on the concerned vfiler.
na_traceroute(1), na_ping6(1), na_ping(1), na_netstat(1),
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