Merging upstream version 1.3.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

examples/readme.lua

@@ -1,4 +1,8 @@
 #!/usr/bin/env dnsjit
+
+-- Disclaimer, to keep this example short it only works on pre-prepared
+-- PCAPs with only UDP DNS traffic in them.
+
 require("dnsjit.core.objects")
 local input = require("dnsjit.input.pcap").new()
 local layer = require("dnsjit.filter.layer").new()
@@ -12,6 +16,7 @@ while true do
     local object = producer(ctx)
     if object == nil then break end
     if object:type() == "payload" then
+        dns:reset()
         dns.obj_prev = object
         if dns:parse_header() == 0 then
             print(dns.id)