[NCLUG] Confirmation outside CWX for ebay problem

[John L. Bass]

Thanks Jeff for confirming the problem is certainly outside CWX. Now the
question is if this is a FRII web caching problem, or a problem with some
router at FRII, Denver NAP, or ebay.

In my own testing, I have found as many machines/IP's don't have any problem,
as the number of machines/IP's that do have a problem. So I think it would
be a little hasty to consider this a Linux only problem unless a sweep of
a Class C showed only Linux boxes have the problem. I believe (and will have
to re-verify this) that a windows browser had the same problem here.

If someone has a class C connected outside FRII, it would be helpful to scan
a dozen or so IP's on it.

Thanks mucho ...
John



	Date: Tue, 27 Dec 2005 19:18:30 -0300
	From: jeff <jeff at themoes.org>
	To: Northern Colorado Linux Users Group <nclug at nclug.org>
	Cc: techs at cwx.net
	Subject: Re: [NCLUG] Connectivity problems to ebay, (and possibly others)

	John L. Bass wrote:
	[chop]
	>         [root at fastbox log]# telnet 216.113.178.140 80
	>         [root at fastbox log]# telnet 216.113.185.41 80
	>         [root at test ~]# telnet 216.113.178.10 80
	>         [root at Bass ~]# telnet 216.113.176.11 80
	[chop]
	 >
	> Try telneting to each of the addresses above a few times and let me know if
	> you are also seeing the problem.

	I can confirm I'm seeing "flakiness" with those IPs from my Linux boxes 
	co-located @ FRII. I tried from different boxes which are on different 
	subnets, each with their own ethernet drop (e.g. two drops).

	Sometimes it wouldn't connect, sometimes it would connect but a "GET /" 
	would return nothing, and sometimes a "GET /" would show IIS ebay crap:
	Server: Microsoft-IIS/5.0
	Date: Tue, 27 Dec 2005 22:04:34 GMT
	Server: WebSphere Application Server/4.0


	I then tested from two OpenBSD boxes at the FRII co-lo. They were able 
	to connect /every/ time.

	So? Linux kernel bug?

	Hmm. I then tested from my Linux laptop connected here in argentina to a 
	  cable modem.  It could connect 100% of the time.

	The Linux boxes that failed above were running kernels, um, 2.4.30, 
	2.6.10 & 2.6.12.

	Perhaps it's this: the akamai or akamaiish boxes that are caching for 
	ebay that are between FRII & eBay have some incompatability with the 
	Linux kernel.

	-Jeff