code: func NetworkLinkDelIp(iface *net.Interface, ip net.IP, ipNet *net.IPNet) error {
  	return networkLinkIpAction(
  		syscall.RTM_DELADDR,
  		syscall.NLM_F_ACK,
  		IfAddr{iface, ip, ipNet},
  	)
  }
docs: // Delete an IP address from an interface. This is identical to:
  // ip addr del $ip/$ipNet dev $iface