[CentOS] Question on nmcli CentOS 8

Fri Dec 11 20:38:58 UTC 2020
Gianluca Cecchi <gianluca.cecchi at gmail.com>

On Fri, Dec 11, 2020 at 9:20 PM Jerry Geis <jerry.geis at gmail.com> wrote:

> I am trying to modify the current eth0 with nmcli
> I ran this:
> nmcli con mod eth0 ipv4.addr gw4 ipv4.dns
> and now nmcli shows (two ipv4) addresses.
>        inet4
>         inet4
> I think the original connection was DHCP... the 2.212 item listed.
> So I want to change the original DHCP to a static network - how do I do
> that?
> I only want the one address not two.
> So now I need to "remove" both or all and add the 1 I want as static ? how
> do I do that?
> Thanks,
> Jerry

Supposing you don't need ipv6 and you are on console not having problems of
loosing connectivity I would do

nmcli con mod eth0 ipv4.method manual ipv6.method ignore autoconnect yes
ipv4.addresses gw4 ipv4.dns
nmcli dev dis eth0
nmcli con up eth0

just tried on a CentOS 8.1 with Network Manager and configured with dhcp.