debian-ports-archive-keyring-u software package provides GnuPG keys of the debian-ports archive, 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 debian-ports-archive-keyring-u
debian-ports-archive-keyring-u is installed in your system.
Make ensure the debian-ports-archive-keyring-u package were installed using the commands given below,
$ sudo dpkg-query -l | grep debian-ports-archive-keyring-u*
You will get with debian-ports-archive-keyring-u package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | debian-installer udeb packages |
| Package | debian-ports-archive-keyring-u |
| Version | 2016.02.01 |
| Description | GnuPG keys of the debian-ports archive |
| Sub Section | Debian-installer |