From e942244ba2576c761518579fc1a441ecb9d2155c Mon Sep 17 00:00:00 2001
From: david <david@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Fri, 22 Jan 2010 23:44:51 +0000
Subject: [PATCH] Add a patch to dns.lua from Patrik Karlsson to cope with some
 mDNS implementations.

---
 nselib/dns.lua | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/nselib/dns.lua b/nselib/dns.lua
index 412f4c455..e5fa3f236 100644
--- a/nselib/dns.lua
+++ b/nselib/dns.lua
@@ -67,7 +67,13 @@ end
 local function gotAnswer(rPkt)
    -- have we even got answers?
    if #rPkt.answers > 0 then
-      
+
+      -- some MDNS implementation incorrectly return an empty question section
+      -- if this is the case return true
+      if rPkt.questions[1] == nil then
+        return true
+      end
+
       -- are those answers not just cnames?
       if rPkt.questions[1].dtype == types.A then
          for _, v in ipairs(rPkt.answers) do