To Fix the issue it is neccesary to remove inside deb package the following file: '/usr/lib/systemd/system/keepalived.service', and the path: '/usr/lib/'.
Making that, it is possible to install keepalived correctly and deb package installs the systemd service by mean of 'deb-systemd-helper' on '/usr/lib/systemd/system/' Do this: $ cp keepalived_1.2.24-1_amd64.deb keepalived-modified/ $ cd keepalived-modified/ $ mkdir tmp $ dpkg-deb -R keepalived_1.2.24-1_amd64.deb tmp/ $ rm -rf tmp/usr/lib/ $ dpkg-deb -b tmp keepalived_1.2.24-1_amd64-fixed.deb Now, you can install with '# dpkg -i keepalived_1.2.24-1_amd64-fixed.deb && apt -f install'
