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I am trying to get traceroute installed with:

$ sudo apt-get install inetutils-traceroute 
$ traceroute --version
traceroute (GNU inetutils) 1.9.4
Copyright (C) 2015 Free Software Foundation, Inc.

to work over TCP on Ubuntu 19.10 but it gives:

$ traceroute -T google.com
traceroute: invalid option -- 'T'
Try 'traceroute --help' or 'traceroute --usage' for more information.

Strange since this post:

Wget and curl can work normally, but ping fails

says that should be a valid option.

But I don't find -T that on my system/version of traceroute:

$ traceroute --help
Usage: traceroute [OPTION...] HOST
Print the route packets trace to network host.

  -f, --first-hop=NUM        set initial hop distance, i.e., time-to-live
  -g, --gateways=GATES       list of gateways for loose source routing
  -I, --icmp                 use ICMP ECHO as probe
  -m, --max-hop=NUM          set maximal hop count (default: 64)
  -M, --type=METHOD          use METHOD (`icmp' or `udp') for traceroute
                             operations, defaulting to `udp'
  -p, --port=PORT            use destination PORT port (default: 33434)
  -q, --tries=NUM            send NUM probe packets per hop (default: 3)
      --resolve-hostnames    resolve hostnames
  -t, --tos=NUM              set type of service (TOS) to NUM
  -w, --wait=NUM             wait NUM seconds for response (default: 3)
  -?, --help                 give this help list
      --usage                give a short usage message
  -V, --version              print program version

Works fine without -T

$ traceroute google.com
traceroute to google.com (216.58.213.206), 64 hops max
  1   x.x.x.x  8.310ms  8.447ms  8.461ms 
   ...
 10   x.x.x.x  22.349ms  18.459ms  21.743ms 

Any suggestions??

1 Answer 1

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You need to install the traceroute package which provide the modern traceroute command:

sudo apt install traceroute
sudo apt remove inetutils-traceroute

Or -without removing inetutils-traceroute- you can use sudo update-alternatives --config traceroute to switch between traceroute versions.

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  • 1
    Ah that works, requires sudo though. I also found tcptraceroute which works without sudo.
    – u123
    Apr 18, 2020 at 12:02

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