TRACEPATHSection: System Manager's Manual: iputils (8)
Updated: 22 April 2002
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NAMEtracepath, tracepath6 - traces path to a network host discovering MTU along this path
tracepath destination [ port]
It traces path to destination discovering MTU along this path. It uses UDP port port or some random port. It is similar to traceroute, only does not not require superuser privileges and has no fancy options.
tracepath6 is good replacement for traceroute6 and classic example of application of Linux error queues. The situation with tracepath is worse, because commercial IP routers do not return enough information in icmp error messages. Probably, it will change, when they will be updated. For now it uses Van Jacobson's trick, sweeping a range of UDP ports to maintain trace history.
tracepath was written by Alexey Kuznetsov <email@example.com>.
No security issues.
This lapidary deserves to be elaborated. tracepath is not a privileged program, unlike traceroute,ping and other beasts of this kind. tracepath may be executed by everyone who has some access to network, enough to send UDP datagrams to investigated destination using given port.
arping is part of iputils package and the latest versions are available in source form for anonymous ftp ftp://ftp.inr.ac.ru/ip-routing/iputils-current.tar.gz.
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Time: 23:12:09 GMT, March 03, 2024