ipset-bash-completion is programmable completion code for the bash shell, to support the ipset program (netfilter.org). It allows you to interactively retrieve and complete options, commands, set names, types, and members.
You can download it from the following link: https://packetstormsecurity.com/files/download/128354/ipset-bash-completion-2.6.tar.gz
Source: https://packetstormsecurity.com/files/128354/IPSet-Bash-Completion-2.6.html