Parser CombinatorでIPアドレスのチェック ref: http://qiita.com/mather314/items/dfa76148270f10bbad95

file0.scala

import java.net.{InetAddress,UnknownHostException}
import util.parsing.combinator.RegexParsers

object IpParsers extends RegexParsers {
  def ipAddress: Parser[String] = """[0-9a-fA-F:\.]+""".r.withFilter { str =>
    try {
      val addr = InetAddress.getByName(str)
      true
    } catch {
      case e: UnknownHostException => false
    }
  }
}

file1.scala

util.Try(InetAddress.getByName(str)).isSuccess