gtrayicon software package provides Generic tray icon for GNOME, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gtrayicon
gtrayicon is installed in your system.
Make ensure the gtrayicon package were installed using the commands given below,
$ sudo dpkg-query -l | grep gtrayicon *
You will get with gtrayicon package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Utilities |
| Package | gtrayicon |
| Version | 1.1-1 |
| Description | Generic tray icon for GNOME |
| Sub Section | Utils |