When you need specific version of package, you can install the version you want using apt.
To show the list versions of package,
$ sudo apt-cache policy <package-name>
To install specific version,
$ sudo apt install <package-name>=<version-you-want>;
Example:
$ sudo apt-cache policy librealsense2
librealsense2:
Installed: (none)
Candidate: 2.16.4-0~realsense0.127
Version table:
2.16.4-0~realsense0.127 500
500 http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo xenial/main amd64 Packages
2.16.3-0~realsense0.115 500
500 http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo xenial/main amd64 Packages
2.16.3-0~realsense0.103 500
500 http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo xenial/main amd64 Packages
2.16.3-0~realsense0.97 500
500 http://realsense-hw-public.s3.amazonaws.com/Debian/apt-repo xenial/main amd64 Packages
...
$ sudo apt install librealsense2=2.11.1-0~realsense0.70
To prevent upgrade,
$ sudo apt-mark hold <package-name>