[wellylug] [nzlug] Re: Squid, wpad.dat auto-configuration and the Air NZ booking service - RESOLVED

Daniel Pittman daniel at rimspace.net
Mon Apr 20 12:30:09 NZST 2009


Daniel Lawson <daniel at meta.net.nz> writes:

>> I am surprised you didn't also fiddle with ECN, the most likely
>> candidate for breaking the connection.
>>   
> [..]
>> Then work out which of those features actually causes the problem
>> and, ideally, report that to the technical people at AirNZ who have a
>> broken Internet connection.
>>   
>
> I reported ECN brokenness to AirNZ about a year or so ago, and they
> said they'd look into. It's come up several times before that though.
>
> A quick test now indicates that ECN, at least, is not the problem,
> although I may be missing something (both enabling ECN via sysctl, and
> using the -E option to tcptraceroute seem to work ok).

No, that should be pretty comprehensive; my guess is that the squid box
runs a version of Linux that has window_scale set to 7, while the
desktop has it lower, so one fails and one is just slow...

Regards,
        Daniel



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