NETWORK - How to modify default gateway when added a NIC

Hi all,

I use Oracle Linux 8.7.

[root@dbservertst tmp]# cat /etc/oracle-release

Oracle Linux Server release 8.7

I created a VM with one NIC like below.

[root@dbservertst ~]# nmcli d show | grep "GENERAL.DEVICE:"

GENERAL.DEVICE:                         ens3

GENERAL.DEVICE:                         lo

[root@dbservertst ~]# nmcli c show

NAME                          UUID                                  TYPE      DEVICE

network-dbserver-config  21d47e65-8523-1a06-af22-6f121086f085  ethernet  ens3

[root@dbservertst ~]# nmcli c show network-dbserver-config

connection.id:                          network-dbserver-config

connection.uuid:                        21d47e65-8523-1a06-af22-6f121086f085

connection.stable-id:                   --

connection.type:                        802-3-ethernet

connection.interface-name:              ens3

connection.autoconnect:                 oui

connection.autoconnect-priority:        0

connection.autoconnect-retries:         -1 (default)

connection.multi-connect:               0 (default)