HI, I read IP Command Reference from A. Kuznetsov and in section about interface flags is: SLAVE - this interface is bonded to some another interface to share link capacities. If I understanded this, it is a posibility to make something similar what do cisco IOS if it slaves interface under dummy, dummy have assigned an IP address, slave interfaces are without IP adress. But in IP Command Reference it is no note about slaving an interface. PSIkappa psi@xxxxxxxxxxx