1 files changed, 1 insertions, 26 deletions
diff --git a/lib/dns.js b/lib/dns.js
index 92b55f0359..979d724c3e 100644
--- a/lib/dns.js
+++ b/lib/dns.js
@@ -24,7 +24,7 @@
 const util = require('util');
 
 const cares = process.binding('cares_wrap');
-const { isLegalPort } = require('internal/net');
+const { isIP, isIPv4, isLegalPort } = require('internal/net');
 const { customPromisifyArgs } = require('internal/util');
 const errors = require('internal/errors');
 const {
@@ -38,7 +38,6 @@ const {
   GetNameInfoReqWrap,
   QueryReqWrap,
   ChannelWrap,
-  isIP
 } = cares;
 
 function errnoException(err, syscall, hostname) {
@@ -66,30 +65,6 @@ function errnoException(err, syscall, hostname) {
 }
 
 const IANA_DNS_PORT = 53;
-const digits = [
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0-15
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16-31
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 32-47
-  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, // 48-63
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 64-79
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 80-95
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 96-111
-  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0  // 112-127
-];
-function isIPv4(str) {
-  if (!digits[str.charCodeAt(0)]) return false;
-  if (str.length === 1) return false;
-  if (str.charCodeAt(1) === 46/*'.'*/)
-    return true;
-  else if (!digits[str.charCodeAt(1)])
-    return false;
-  if (str.length === 2) return false;
-  if (str.charCodeAt(2) === 46/*'.'*/)
-    return true;
-  else if (!digits[str.charCodeAt(2)])
-    return false;
-  return (str.length > 3 && str.charCodeAt(3) === 46/*'.'*/);
-}
 
 
 function onlookup(err, addresses) {