nmtui oel 8.x bonding

# nmtui

select edit a connection

remove ethernet adapters that will be included bonding (eno1, eno2)

add bond

click Add to add NIC's

add nic's (add eno1 + eno2)

change parameters, Active Backup...

click add to add vlan

choose vlan

choose profile name: bond0.784, device: bond0.784

ipv4 configuration...

activate a connection

click activate on bond0.784 it should activate bond0 too.