tracepath 8 iputils-&snapshot; tracepath, tracepath6 traces path to a network host discovering MTU along this path tracepath -n -b -l -m -p It traces path to Print primarily IP addresses numerically. Print both of host names and IP addresses. Sets the initial packet length to Set maximum hops (or maximum TTLs) to Sets the initial destination port to use. root@mops:~ # tracepath6 3ffe:2400:0:109::2 1?: [LOCALHOST] pmtu 1500 1: dust.inr.ac.ru 0.411ms 2: dust.inr.ac.ru asymm 1 0.390ms pmtu 1480 2: 3ffe:2400:0:109::2 463.514ms reached Resume: pmtu 1480 hops 2 back 2 The first column shows The second column shows the network hop, which replied to the probe. It is either address of router or word The rest of line shows miscellaneous information about path to the correspinding network hop. As rule it contains value of RTT. Additionally, it can show Path MTU, when it changes. If the path is asymmetric or the probe finishes before it reach prescribed hop, difference between number of hops in forward and backward direction is shown following keyword The last line summarizes information about all the path to the destination, it shows detected Path MTU, amount of hops to the destination and our guess about amount of hops from the destination to us, which can be different when the path is asymmetric. , , . Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>. No security issues. This lapidary deserves to be elaborated. http://www.skbuff.net/iputils/iputils-current.tar.bz2. This documentation is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License Version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. For more details see the file COPYING in the source distribution of Linux kernel of version 2.4. ]]>