if err != nil {
		t.Errorf("Unexpected error when add virtual server, error: %v", err)
	}
	// Add another virtual server
	vs3 := &utilipvs.VirtualServer{
		Address:  netutils.ParseIPSloppy("10::40"),
		Port:     uint16(7777),
		Protocol: string("SCTP"),
	}
	err = fake.AddVirtualServer(vs3)
	if err != nil {
		t.Errorf("Unexpected error when add virtual server, error: %v", err)
	}
	// List all virtual servers