Fwd: Problem accessing a Certain Remote IP with Kernel 2.6.24-rc1

Fwd: Problem accessing a Certain Remote IP with Kernel 2.6.24-rc1

[Sparkletone]

Forwarding this for someone who was getting bounces for some reason.

Begin forwarded message:

> From: Shlomi Fish <shlomif@iglu.org.il>
> Date: November 3, 2007 3:31:56 PM CDT
> To: sparkletone@gmail.com
> Subject: Problem accessing a Certain Remote IP with Kernel 2.6.24-rc1
>
> Hi all!
>
> I hope this mail gets through because last time I checked, I got  
> bounces
> whenever I tried to send email to LKML ("not liked source" for mail).
>
> I've been having a problem with kernel 2.6.24-rc1 on Mandriva  
> Cooker. The
> problem is that after using it for a while connecting through TCP to  
> the
> following remote, Internet IP - 212.143.218.31 - takes a very long  
> time.
>
> Here's what I've learned:
>
> 1. Kernel 2.6.23 seem to exhibit this problem tooa fter a while.
>
> 2. It already happened twice with kernel 2.6.24-rc1.
>
> 3. A different computer on the same Home LAN connected via a NAT/ 
> router has no
> problem with that IP. (At the same time, the Linux computer exhibits  
> the
> problematic behaviour).
>
> 4. I could connect using telnet to port 80 eventually, but it took  
> an awfully
> long time.
>
> 5. I have problem with both HTTP to port 80 and POP.
>
> 6. Restarting the network ("/etc/init.d/network restart") does not  
> help - only
> a reboot.
>
> 7. The network as a whole (Google, etc.) works fine.
>
> I need this IP, because it hosts my POP account and my homepage.
>
> Per Rik van Riel's advice I prepared Ethereal (libpcap) dumps of the
> conversations before ("good") and after ("bad") the problem surfaced:
>
> http://freehackers.org/~shlomif/files/files/www.sf.org-conn-problem/
>
> I'd appreciate if anyone would be able to shed more light on this  
> problem and
> hopefully fix it. Please let me know if there's anything else you  
> need.
>
> Regards,
>
> 	Shlomi Fish
>
> ---------------------------------------------------------------------
> Shlomi Fish      shlomif@iglu.org.il
> Homepage:        http://www.shlomifish.org/
>
> I'm not an actor - I just play one on T.V.

Re: Problem accessing a Certain Remote IP with Kernel 2.6.24-rc1

[David Miller]

From: Sparkletone <sparkletone@gmail.com>
Date: Sat, 3 Nov 2007 15:34:18 -0500

> Forwarding this for someone who was getting bounces for some reason.

He's permanently banned from vger.kernel.org for some absurd trolling
behavior he exhibited some time ago.

Now he's trying to make some bug reports or whatnot in order to appear
legitimate.  Often this technique can be very effective if his
previous actions are not fresh in everyone's mind.  I'd like to ask
people to no assist him with this.

Please do not forward his postings here, thank you.

Re: Problem accessing a Certain Remote IP with Kernel 2.6.24-rc1

[Sparkletone]

On Nov 3, 2007, at 6:05 PM, David Miller wrote:

> Please do not forward his postings here, thank you.

I kind of figured something like that was the case, but decided to  
take the chance it was legit.

Don't worry about it happening again!

Re: Fwd: Problem accessing a Certain Remote IP with Kernel 2.6.24-rc1

[Stephen Hemminger]

On Sat, 3 Nov 2007 15:34:18 -0500
Sparkletone <sparkletone@gmail.com> wrote:

> Forwarding this for someone who was getting bounces for some reason.
> 
> Begin forwarded message:
> 
> > From: Shlomi Fish <shlomif@iglu.org.il>
> > Date: November 3, 2007 3:31:56 PM CDT
> > To: sparkletone@gmail.com
> > Subject: Problem accessing a Certain Remote IP with Kernel 2.6.24-rc1
> >
> > Hi all!
> >
> > I hope this mail gets through because last time I checked, I got  
> > bounces
> > whenever I tried to send email to LKML ("not liked source" for mail).
> >
> > I've been having a problem with kernel 2.6.24-rc1 on Mandriva  
> > Cooker. The
> > problem is that after using it for a while connecting through TCP to  
> > the
> > following remote, Internet IP - 212.143.218.31 - takes a very long  
> > time.
> >
> > Here's what I've learned:
> >
> > 1. Kernel 2.6.23 seem to exhibit this problem tooa fter a while.
> >
> > 2. It already happened twice with kernel 2.6.24-rc1.
> >
> > 3. A different computer on the same Home LAN connected via a NAT/ 
> > router has no
> > problem with that IP. (At the same time, the Linux computer exhibits  
> > the
> > problematic behaviour).
> >
> > 4. I could connect using telnet to port 80 eventually, but it took  
> > an awfully
> > long time.
> >
> > 5. I have problem with both HTTP to port 80 and POP.
> >
> > 6. Restarting the network ("/etc/init.d/network restart") does not  
> > help - only
> > a reboot.
> >
> > 7. The network as a whole (Google, etc.) works fine.
> >
> > I need this IP, because it hosts my POP account and my homepage.
> >
> > Per Rik van Riel's advice I prepared Ethereal (libpcap) dumps of the
> > conversations before ("good") and after ("bad") the problem surfaced:
> >
> > http://freehackers.org/~shlomif/files/files/www.sf.org-conn-problem/
> >
> > I'd appreciate if anyone would be able to shed more light on this  
> > problem and
> > hopefully fix it. Please let me know if there's anything else you  
> > need.

Sounds like another instance of the default window scaling causing problems.
Look up TCP window scaling on lwn.net.  There is almost some
stupid middlebox/firewall that doesn't handle window scaling properly.


-- 
Stephen Hemminger <shemminger@linux-foundation.org>