Bug 117665 - TCP ECN should be disabled by default until the rest of the world stops sucking
TCP ECN should be disabled by default until the rest of the world stops sucking
Status: CLOSED WONTFIX
Product: Red Hat Raw Hide
Classification: Retired
Component: distribution (Show other bugs)
1.0
All Linux
low Severity medium
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Assigned To: Bill Nottingham
Brock Organ
:
: 117745 (view as bug list)
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2004-03-06 14:39 EST by Nicholas Miell
Modified: 2014-03-16 22:43 EDT (History)
5 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2005-03-02 14:38:47 EST
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Attachments (Terms of Use)
A handy-dandy patch to the three flavors of sysctl.conf (1.28 KB, patch)
2004-03-06 14:46 EST, Nicholas Miell
no flags Details | Diff

  None (edit)
Description Nicholas Miell 2004-03-06 14:39:13 EST
This isn't technically a bug in any Linux software, but the
interoperability problems are going to confuse the hell out of users
anyway.

Basically, 2.6 kernels have TCP ECN enabled by default. Unfortunately,
everybody else craps themselves when they see packets with the ECN bit
set, resulting in "myserious web sites that I can't connect to"-type
problems.

So, until the rest of the networking world is dragged kicking and
screaming into, well, 1999 or so, /etc/sysctl.conf should have
"net.ipv4.tcp_ecn = 0" in it.
Comment 1 Nicholas Miell 2004-03-06 14:46:13 EST
Created attachment 98345 [details]
A handy-dandy patch to the three flavors of sysctl.conf

New! and Improved! Bug: Now with Minimal Effort Required!
Comment 2 Petri T. Koistinen 2004-03-06 15:06:16 EST
Nothing gets fixed until something breaks. So it's good to break
things in order to get things fixed. Minor break is not fixed, major
is. Better break more when you breaking things. Keep the default.
Comment 3 Bill Nottingham 2004-03-08 11:40:24 EST
That doesn't help upgrades though. Arjan: what's the plan on the
kernel-level default?
Comment 4 Bill Nottingham 2004-03-08 15:13:25 EST
*** Bug 117745 has been marked as a duplicate of this bug. ***
Comment 5 Bill Nottingham 2005-03-02 14:38:47 EST
I don't think this is going to be changed in sysctl.conf. I believe
the kernel defaults to off these days.

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