code: func sysctlInitLB(nodeIface, lbIface *net.Interface) error {
  
  	// System level sysctls.
  	for _, ctl := range seesawSysctls {
  		if _, err := sysctl(ctl.name, ctl.value); err != nil {
  			return err
  		}
  	}
  
  	// Interface level sysctls.
  	ifaces := []string{"all", "default", nodeIface.Name, lbIface.Name}
  	for _, iface := range ifaces {
  		if err := sysctlInitIface(iface); err != nil {
  			return err
  		}
  	}
  	return nil
  }
docs: // sysctlInitLB initialises sysctls required for load balancing.