How to install ipset

I need to setup this server with cloudflare. I’ve follow the instruction until OS: Ubuntu apt-get install ipset error: Err:1 xenial/main amd64 libipset3 amd64 6.29-1 Could not resolve ‘’ Err:2 xenial/main amd64 ipset amd64 6.29-1 Could not resolve ‘’ E: Failed to fetch Could not resolve ‘

E: Failed to fetch Could not resolve ‘

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

How to solved this problem?


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Installing ipset package on Ubuntu 14.04 (Trusty Tahr) is as easy as running the following command on terminal:

sudo apt-get update
sudo apt-get install ipset