[CentOS] Network Manager - rotate connection profile

Mon Oct 26 22:00:45 UTC 2020
Chris Adams <linux at cmadams.net>

Once upon a time, Frank Cox <theatre at sasktel.net> said:
> I have an occasional need to switch a few computers from one Internet provider to a different one.  Both Internet providers feed into the same network, one at and the other at
> So to change from one provider to the other I run nmtui to change the gateway and dns server addresses, then deactivate and reactivate the connection and I'm done.

You could just create multiple connection profiles, like "provA" and
"provB".  Then to switch A->B would be "nmcli con down provA; nmcli con
up provB".  You'd only want one to autoconnect though, so maybe:

   nmcli con down provA
   nmcli con mod provA autoconnect 0
   nmcli con up provB
   nmcli con mod provB autoconnect 1

Or you could even get fancier with a script that would check the
currently active and switch to the other one.

Chris Adams <linux at cmadams.net>