tldr/pages/linux/tracepath.md

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}}