code: func Generate(pattern string) []string {
  	re, _ := regexp.Compile(`\[(.+):(.+)\]`)
  	submatch := re.FindStringSubmatch(pattern)
  	if submatch == nil {
  		return []string{pattern}
  	}
  
  	from, err := strconv.Atoi(submatch[1])
  	if err != nil {
  		return []string{pattern}
  	}
  	to, err := strconv.Atoi(submatch[2])
  	if err != nil {
  		return []string{pattern}
  	}
  
  	template := re.ReplaceAllString(pattern, "%d")
  
  	var result []string
  	for val := from; val <= to; val++ {
  		entry := fmt.Sprintf(template, val)
  		result = append(result, entry)
  	}
  
  	return result
  }
docs: // Generate takes care of IP generation