package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)\b(?:(?:192\.168|172(?:\.(?:1[789]|2\d|3[01])))(?:\.\d{1,3}){2}|10(?:\.\d{1,3}){3})\b`)
var str = `172.17.255.255
172.31.1.123
172.16.1.123
192.168.0.1
172.16.1.1
10.0.0.110`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/