Re: [squid-users] Squid 3.1.12 times out when trying to access MSDN

On Mon, May 30, 2011 at 17:25, Pandu Poluan <pandu_at_poluan.info> wrote:
> On Fri, May 27, 2011 at 17:47, Amos Jeffries <squid3_at_treenet.co.nz> wrote:
>> On 27/05/11 19:42, Pandu Poluan wrote:
>>>
>>> Hello list,
>>>
>>> I've been experiencing a perplexing problem.
>>>
>>> Squid 3.1.12 often times out when trying to access certain sites, most
>>> notably MSDN. But it's still very fast when accessing other
>>> non-problematic sites.
>>>
>>> For instance, trying to access the following URL *always* result in
>>> timeout:
>>>
>>> http://msdn.microsoft.com/en-us/library/aa302323.aspx
>>>
>>> Trying to get the above URL using wget: No problem.
>>>

-- 8< ---- 8< ---- 8< ---- 8< ---- 8< --

>>
>> msdn.microsoft.com DNS response to AAAA lookup is a successful CNAME, but
>> with no IP addresses to connect to.
>>
>> The behaviour you describe can appear if you have turned dns_v4_fallback
>> OFF. Which disables A lookup (IPv4 connectivity) if there is any kind of
>> successful AAAA, even a useless empty one like MSDN produces.
>>
>
> Ah, I see... I'll try it out today.
>

No joy :-(

I've specified "dns_v4_fallback on" explicitly (it was not specified
previously) and even replaced the miss_access lines with "miss_access
allow all".

Still failing on those problematic pages.

-- 
Pandu E Poluan
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