Traditionally, we use dhclient to release and renew DHCP lease on Linux. It probably still work with modern Linux distros nowadays. However, most distros come with NetworkManager which provides nmcli command line interface to manage networking. Here’s how to renew DHCP lease using nmcli performing on my machine. Your output when running these commands could be different.

First, let’s list the connections managed by NetworkManager.

# nmcli con
NAME                UUID                                  TYPE            DEVICE     
virbr0              2c2c7c4f-15e9-439b-be1d-e1d0131fb41c  bridge          virbr0     
Wired connection 1  5c9000c5-2635-4b09-90d7-71c3783c6626  802-3-ethernet  enp0s25    
enp0s25             70ee0b94-8341-46ec-953d-f2c3ca34285a  802-3-ethernet  --         
virbr0-nic          aafaa95e-6ced-4ea9-bd4f-7c8d10fb51b6  generic         virbr0-nic

Next, we can find out the current IP associated with enp0s25 by running command:

# ip a show enp0s25 | grep 'inet '
    inet 192.168.1.187/24 brd 192.168.1.255 scope global dynamic enp0s25

To renew IP for enp0s25, run these commands by supplying the connection’s name. In my case, it’s “Wired connection 1”:

# nmcli con down id 'Wired connection 1'
# nmcli con up id 'Wired connection 1'

Let’s verify the new IP address:

# ip a show enp0s25 | grep 'inet '
    inet 192.168.1.114/24 brd 192.168.1.255 scope global dynamic enp0s25

Well, if you still see the same IP address, it could just mean that your DHCP server keeps offering the same IP address for your machine.

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