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tracepath — Trace the path to a network host discovering MTU along this path. More information: <https://manned.

Submitted by: @import:tldr-pages·Mar 2, 2026·

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thecommandtracepathnetworkclihosttracepath

linux

Problem

How to use the tracepath command: Trace the path to a network host discovering MTU along this path. More information: <https://manned.org/tracepath>.

Solution

tracepath — Trace the path to a network host discovering MTU along this path. More information: <https://manned.org/tracepath>.

A preferred way to trace the path to a host:

tracepath -p {{33434}} {{host}}

Specify the initial destination port, useful with non-standard firewall settings:

tracepath -p {{destination_port}} {{host}}

Print both hostnames and numerical IP addresses:

tracepath -b {{host}}

Specify a maximum TTL (number of hops):

tracepath -m {{max_hops}} {{host}}

Specify the initial packet length (defaults to 65535 for IPv4 and 128000 for IPv6):

tracepath -l {{packet_length}} {{host}}

Use only IPv6 addresses:

tracepath -6 {{host}}

Code Snippets

A preferred way to trace the path to a host

tracepath -p {{33434}} {{host}}

Specify the initial destination port, useful with non-standard firewall settings

tracepath -p {{destination_port}} {{host}}

Print both hostnames and numerical IP addresses

tracepath -b {{host}}

Specify a maximum TTL (number of hops)

tracepath -m {{max_hops}} {{host}}

Specify the initial packet length (defaults to 65535 for IPv4 and 128000 for IPv6)

tracepath -l {{packet_length}} {{host}}

Context

tldr-pages: linux/tracepath

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