package main

import (
	"fmt"
	"regexp"
)

var ipRegex = regexp.MustCompile("((?:(?:25[0-5]|2[0-4]\\d|((1\\d{2})|([1-9]?\\d)))\\.){3}(?:25[0-5]|2[0-4]\\d|((1\\d{2})|([1-9]?\\d))))")

func getRemoteIp(ip string) string {
	groups := ipRegex.FindAllString(ip, -1)
	if len(groups) > 0 {
		ip = groups[0]
	}
	return ip
}

func main() {
	ip1 := "%以太网%10.12.90.233%以太网:22334"
	ip1 = getRemoteIp(ip1)
	fmt.Printf("%s\n", ip1)
}