Index: frontend/node_modules/dns-packet/rcodes.js
===================================================================
--- frontend/node_modules/dns-packet/rcodes.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/dns-packet/rcodes.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,50 @@
+'use strict'
+
+/*
+ * Traditional DNS header RCODEs (4-bits) defined by IANA in
+ * https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml
+ */
+
+exports.toString = function (rcode) {
+  switch (rcode) {
+    case 0: return 'NOERROR'
+    case 1: return 'FORMERR'
+    case 2: return 'SERVFAIL'
+    case 3: return 'NXDOMAIN'
+    case 4: return 'NOTIMP'
+    case 5: return 'REFUSED'
+    case 6: return 'YXDOMAIN'
+    case 7: return 'YXRRSET'
+    case 8: return 'NXRRSET'
+    case 9: return 'NOTAUTH'
+    case 10: return 'NOTZONE'
+    case 11: return 'RCODE_11'
+    case 12: return 'RCODE_12'
+    case 13: return 'RCODE_13'
+    case 14: return 'RCODE_14'
+    case 15: return 'RCODE_15'
+  }
+  return 'RCODE_' + rcode
+}
+
+exports.toRcode = function (code) {
+  switch (code.toUpperCase()) {
+    case 'NOERROR': return 0
+    case 'FORMERR': return 1
+    case 'SERVFAIL': return 2
+    case 'NXDOMAIN': return 3
+    case 'NOTIMP': return 4
+    case 'REFUSED': return 5
+    case 'YXDOMAIN': return 6
+    case 'YXRRSET': return 7
+    case 'NXRRSET': return 8
+    case 'NOTAUTH': return 9
+    case 'NOTZONE': return 10
+    case 'RCODE_11': return 11
+    case 'RCODE_12': return 12
+    case 'RCODE_13': return 13
+    case 'RCODE_14': return 14
+    case 'RCODE_15': return 15
+  }
+  return 0
+}