crossroads software package provides open source load balance and fail over utility for TCP based services, 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 crossroads
crossroads is installed in your system.
Make ensure the crossroads package were installed using the commands given below,
$ sudo dpkg-query -l | grep crossroads *
You will get with crossroads package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Network |
| Package | crossroads |
| Version | 2.81-1 |
| Description | open source load balance and fail over utility for TCP based services |
| Sub Section | Net |