initrd-kickseed software package provides Load Kickstart file from the initrd, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install initrd-kickseed
initrd-kickseed is installed in your system.
Make ensure the initrd-kickseed package were installed using the commands given below,
$ sudo dpkg-query -l | grep initrd-kickseed *
You will get with initrd-kickseed package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | debian-installer udeb packages |
| Package | initrd-kickseed |
| Version | 0.62 |
| Description | Load Kickstart file from the initrd |
| Sub Section | Debian-installer |