gkrellm-mldonkey software package provides mldonkey plugin for gkrellm2, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gkrellm-mldonkey
gkrellm-mldonkey is installed in your system.
Make ensure the gkrellm-mldonkey package were installed using the commands given below,
$ sudo dpkg-query -l | grep gkrellm-mldonkey *
You will get with gkrellm-mldonkey package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | gkrellm-mldonkey |
| Version | 0.9.7-2.1 |
| Description | mldonkey plugin for gkrellm2 |
| Sub Section | X227 |