Closed Bug 1137628 Opened 9 years ago Closed 9 years ago

Firefox 36.0 asking for unnecessary ANY DNS questions

Categories

(Firefox :: Untriaged, defect)

Product:
Firefox
Component:
Untriaged
Version:
36 Branch
Platform:
x86
Linux
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 1093983

People

(Reporter: winfried.angele, Unassigned)

Details

User Agent: Mozilla/5.0 (X11; Linux i686; rv:36.0) Gecko/20100101 Firefox/36.0
Build ID: 20150222232811

Steps to reproduce:

I call a URL, for instance http://www.katzenpension-nersingen.de. on a Win8/FF36 box. and I capture the DNS Queries on the wire.



Actual results:

08:36:03.372220 ... A? Www.kaTzeNPENSioN-NerSInGeN.de. (48)
08:36:03.373359 ... AAAA? wwW.KaTzeNpeNsION-NeRsINgEn.de. (48)
08:36:03.406751 ... ANY? wWW.KaTzEnPenSIOn-NErsIngEN.DE. (48)

Please note, FF asks for A, AAAA *and* ANY


Expected results:

Asking for A, AAAA *and* ANY is useless. Asking a recursive DNS server for ANY is useles in each case, because recursive DNS server must only respond what it has in cache and not the full list of RRs and types in this case. Furthermore some recursive DNS servers responds with TC-flag in the DNS header in case of ANY questions, which leads to queries over TCP instead of UDP and this slows down surfing...
Status: UNCONFIRMED → RESOLVED
Closed: 9 years ago
Resolution: --- → DUPLICATE
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