Basic Linux Networking tips and tricks part-1: ip and nmcli commands

We have all heard, at one time or another, a system administrator blaming the network. Then, it is up to the network engineers to prove that the network is not in cause. To do this, a minimum of network troubleshooting skills on Linux systems could be required. For the first post in the series: many examples of how to use the ip and nmcli commands.  

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