[cifs-protocol] Question about MS DNS server dropping packets from client

Tom Jebo tomjebo at microsoft.com
Thu Sep 29 07:09:23 MDT 2011

Hi Kai, 

Thanks for your question regarding DNS server dropped packets.  One of the Open Specifications team will contact you shortly to begin assisting you. 

Best regards,
Tom Jebo
Escalation Engineer
Microsoft Open Specifications

-----Original Message-----
From: Kai Blin [mailto:kai at samba.org] 
Sent: Thursday, September 29, 2011 12:52 AM
To: Interoperability Documentation Help; pfif at tridgell.net; cifs-protocol at samba.org
Subject: Question about MS DNS server dropping packets from client

Hash: SHA1

Hi folks,

While trying to test corner cases of the DNS implementation of Microsoft, I've noticed that if I send DNS packets that cause FORMERROR return values, the DNS server will silently drop further packets that would trigger a FORMERROR. I can still send and get replies to valid packets from the machine that is blocked for FORMERROR packets. If I wait a couple of minutes or restart the DNS server service, I can get one reply for a FORMERROR packet again, then I'm blocked again.

What's going on there, and more importantly, is there something I can do to turn this of?


- --
Kai Blin
Worldforge developer http://www.worldforge.org/ Wine developer http://wiki.winehq.org/KaiBlin Samba team member http://www.samba.org/samba/team/ -----BEGIN PGP SIGNATURE-----
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