code: func (v *vserver) unconfigureVIPs() {
  	ncc := v.engine.ncc
  	if err := ncc.Dial(); err != nil {
  		log.Fatalf("%v: failed to connect to NCC: %v", v, err)
  	}
  	defer ncc.Close()
  
  	// TODO(jsing): At a later date this will need to support VLAN
  	// interfaces and dedicated VIP subnets.
  	for vip := range v.vips {
  		v.unconfigureVIP(&vip)
  	}
  }
docs: // unconfigureVIPs removes unicast VIPs from the load balancing interface.