[Samba] ndr_push_error(6) blob length is too large

[Tim]

Hello all,

I've set the log level of my DC to 3. I'm using it as a file server too 
although it is not recommended.

I now have the following errors in log.samba:
[2015/03/03 08:58:54.244106,  2] 
../source4/dns_server/dns_query.c:629(dns_server_process_query_send)
   Not authoritative for 'versioncheck.addons.mozilla.org', forwarding
[2015/03/03 08:58:54.266123,  1] ../librpc/ndr/ndr.c:489(ndr_push_error)
   ndr_push_error(6): Invalid...Unexpected blob length is too large

The first one is self-explanatory but what does the 2nd one mean? There 
are a few of these errors.

Samba version: 4.1.17 (SerNet)
OS: CentOS 7

Thanks in advance
Tim