[off-topic] Bad web page rendering

[Adrian Chadd]

.. the MTU thing is a good thing to chase up.

This feels like a standard broken path MTU discovery issue, precisely
because of misconfigured MTUs somewhere in the path between you and
the website.

Set your PC MTU and router MTU (facing you, eg ethernet-ethernet,
wifi-wifi) to something small, like 576. That way you don't end up
causing another set of MTU mismatch issues.

The other thing you can do is try icmp ping frames of different sizes,
from 64 bytes up to 1500 bytes. See if you hit a size that doesn't
work.

HTH,




Adrian

(holy crap, it's like debugging satellite IP in the 90s!)

On 14 December 2012 23:59, Jim Householder <nofixed at westnet.com.au> wrote:
> Could be, although before the NBN I was using Westnet's satellite service
> and did not have the problem.  I suspect it probably is related to timeouts
> or dropped packets.
>
>
>
> On 12/15/12 11:04, Garry wrote:
>>
>>
>> Could it be some sort of timeout problem with the increased transit time
>> of the satellite?
>>
>> Garry
>>
>> On 15/12/12 09:52, Jim Householder wrote:
>>>
>>> Thanks, Tim.
>>>
>>> Regarding mtu, it appears that eth0 is getting 576 while wlan0 gets
>>> 1500.  I changed  eth0 to 1200 and 1500 but still have the problem.
>>>
>>> I will check on the acceleration and packet loss now.
>>>
>>> I used wireless on the road, but normally use a wired connection at
>>> home.  I'll check the wireless side for the problem.
>>>
>>> Jim
>>>
>>>
>>> On 12/15/12 08:17, Tim White wrote:
>>>>
>>>> Hey Jim
>>>>
>>>> Something to find out would be if you are using HTTP Acceleration or
>>>> only TCP Acceleration. I've seen comments that HTTP Acceleration can
>>>> cause problems, but as it's not enabled for me, I don't know if it does
>>>> or doesn't. (I'm on Skymesh)
>>>>
>>>> It sounds like the pages aren't fully loading the CSS before they
>>>> display. The refresh loads the CSS and all is good.
>>>>
>>>> Something to check would be if you have any packet loss issues. Even a
>>>> small amount of packetloss can be enough to stall the connection that is
>>>> fetching the CSS
>>>>
>>>> You might want to try a Squid proxy (local) to see if that helps.
>>>>
>>>> Tim
>>>>
>>>> On 14/12/12 21:21, Jim Householder wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> Since switching to the NBN Satellite service I have had a really bad
>>>>> run of pages not being displayed properly.
>>>>>
>>>>> The usual scenario is images are OK, but all the links and menus are
>>>>> underlined text down the left margin.  If I reload the page it usually
>>>>> displays correctly.
>>>>>
>>>>> Sometimes if there are thumbnails on the page, some will display and
>>>>> others only get the broken image icon.  A reload sometimes fixes it
>>>>> and sometimes not.
>>>>>
>>>>> I have recently been in the USA and Canada and had no problems there.
>>>>>
>>>>> I compared the page source of one page before and after reload, and
>>>>> there was no difference.  Considering the number of bits and pieces
>>>>> loaded for each page I suspect the difference was in those that may
>>>>> not have been displayed in the source window.
>>>>>
>>>>> I have contacted Westnet several times back in September before I left
>>>>> for the other side of the world but they could not find anything
>>>>> wrong.  I have yet to call them now that I'm back.
>>>>>
>>>>> Is there anything I can look at before I call again?  I'm using the
>>>>> latest firefox.
>>>>>
>>>>> Thanks
>>>>> Jim
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