Bug 12772
Summary: | linux is not able to handle more than ~4096 ipv6 addresses | ||
---|---|---|---|
Product: | Networking | Reporter: | Tobias Winter (tobias) |
Component: | IPV6 | Assignee: | Hideaki YOSHIFUJI (yoshfuji) |
Status: | RESOLVED OBSOLETE | ||
Severity: | normal | CC: | alan |
Priority: | P1 | ||
Hardware: | All | ||
OS: | Linux | ||
Kernel Version: | 2.6.29-rc6 | Subsystem: | |
Regression: | No | Bisected commit-id: |
Description
Tobias Winter
2009-02-24 11:35:25 UTC
Reply-To: akpm@linux-foundation.org (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 24 Feb 2009 11:35:25 -0800 (PST) bugme-daemon@bugzilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=12772 > > Summary: linux is not able to handle more than ~4096 ipv6 > addresses > Product: Networking > Version: 2.5 > KernelVersion: 2.6.26-1-amd64 #1 SMP Sat Jan 10 19:55:48 UTC 2009 > x86_64 GNU/Li That's a fairly old kernel. > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: IPV6 > AssignedTo: yoshfuji@linux-ipv6.org > ReportedBy: tobias@linuxdingsda.de > > > Latest working kernel version: -- > Earliest failing kernel version: -- > Distribution: Debian sid > Hardware Environment: model name : Intel(R) Pentium(R) Dual CPU E2180 > @ > 2.00GHz > Software Environment: > Problem Description: > Linux is unable to handle more than ~4096 ipv6 addresses and usually crashes > after a not very long time. If not, it at least gets unusable slow. > > Consider shared hosting environments, where you have some few thousand > customers with a few domains each sitting on one box. You now would like to > use > ipv6 for greater fun with https and, for that, need about 6-30k addresses > bound > to the box. > > > Steps to reproduce: > > #!/bin/bash > COUNTER=1 > COUNTERR=1 > while [ $COUNTERR -lt 9999 ]; do > while [ $COUNTER -lt 9999 ]; do > ip addr add 2001::$COUNTERR:$COUNTER/64 dev eth1 > let COUNTER=COUNTER+1 > echo $CONTERR $COUNTER > done > let COUNTERR=COUNTER+1 > done > Point taken. I just gave it a try with 2.6.29-rc6 and the problem persists.
Andrew Morton wrote:
> (switched to email. Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
>
> On Tue, 24 Feb 2009 11:35:25 -0800 (PST)
> bugme-daemon@bugzilla.kernel.org wrote:
>
>> http://bugzilla.kernel.org/show_bug.cgi?id=12772
>>
>> Summary: linux is not able to handle more than ~4096 ipv6
>> addresses
>> Product: Networking
>> Version: 2.5
>> KernelVersion: 2.6.26-1-amd64 #1 SMP Sat Jan 10 19:55:48 UTC 2009
>> x86_64 GNU/Li
>
> That's a fairly old kernel.
>
>> Platform: All
>> OS/Version: Linux
>> Tree: Mainline
>> Status: NEW
>> Severity: normal
>> Priority: P1
>> Component: IPV6
>> AssignedTo: yoshfuji@linux-ipv6.org
>> ReportedBy: tobias@linuxdingsda.de
>>
>>
>> Latest working kernel version: --
>> Earliest failing kernel version: --
>> Distribution: Debian sid
>> Hardware Environment: model name : Intel(R) Pentium(R) Dual CPU E2180
>> @
>> 2.00GHz
>> Software Environment:
>> Problem Description:
>> Linux is unable to handle more than ~4096 ipv6 addresses and usually crashes
>> after a not very long time. If not, it at least gets unusable slow.
>>
>> Consider shared hosting environments, where you have some few thousand
>> customers with a few domains each sitting on one box. You now would like to
>> use
>> ipv6 for greater fun with https and, for that, need about 6-30k addresses
>> bound
>> to the box.
>>
>>
>> Steps to reproduce:
>>
>> #!/bin/bash
>> COUNTER=1
>> COUNTERR=1
>> while [ $COUNTERR -lt 9999 ]; do
>> while [ $COUNTER -lt 9999 ]; do
>> ip addr add 2001::$COUNTERR:$COUNTER/64 dev eth1
>> let COUNTER=COUNTER+1
>> echo $CONTERR $COUNTER
>> done
>> let COUNTERR=COUNTER+1
>> done
>>
>
If this is still seen on modern kernels then please re-open/update and report the relevant example and use case to netdev@vger.kernel.org |