1 files changed, 35 insertions, 0 deletions
diff --git a/test/parallel/test-dns-resolveany-bad-ancount.js b/test/parallel/test-dns-resolveany-bad-ancount.js
new file mode 100644
index 0000000000..25ce15935c
--- /dev/null
+++ b/test/parallel/test-dns-resolveany-bad-ancount.js
@@ -0,0 +1,35 @@
+'use strict';
+const common = require('../common');
+const dnstools = require('../common/dns');
+const dns = require('dns');
+const assert = require('assert');
+const dgram = require('dgram');
+
+const server = dgram.createSocket('udp4');
+
+server.on('message', common.mustCall((msg, { address, port }) => {
+  const parsed = dnstools.parseDNSPacket(msg);
+  const domain = parsed.questions[0].domain;
+  assert.strictEqual(domain, 'example.org');
+
+  const buf = dnstools.writeDNSPacket({
+    id: parsed.id,
+    questions: parsed.questions,
+    answers: { type: 'A', address: '1.2.3.4', ttl: 123, domain },
+  });
+  // Overwrite the # of answers with 2, which is incorrect.
+  buf.writeUInt16LE(2, 6);
+  server.send(buf, port, address);
+}));
+
+server.bind(0, common.mustCall(() => {
+  const address = server.address();
+  dns.setServers([`127.0.0.1:${address.port}`]);
+
+  dns.resolveAny('example.org', common.mustCall((err) => {
+    assert.strictEqual(err.code, 'EBADRESP');
+    assert.strictEqual(err.syscall, 'queryAny');
+    assert.strictEqual(err.hostname, 'example.org');
+    server.close();
+  }));
+}));