* Re: Per route MTU settings are broken in linux kernel 3.2 [not found] <1372063443.32157.10.camel@linux> @ 2013-06-24 12:45 ` Ben Hutchings 2013-06-24 13:08 ` Yura Pakhuchiy 0 siblings, 1 reply; 3+ messages in thread From: Ben Hutchings @ 2013-06-24 12:45 UTC (permalink / raw) To: Yura Pakhuchiy; +Cc: linux-kernel, netdev, stable [-- Attachment #1: Type: text/plain, Size: 790 bytes --] On Mon, 2013-06-24 at 15:44 +0700, Yura Pakhuchiy wrote: > Hello Ben, > > Looks like setting per route MTU (as described in [1]) is broken in > Linux kernel 3.2. I tested with newer Ubuntu kernels 3.5 and 3.8 and it > looks like problem is fixed there. I filled Ubuntu bug report [2] with > more details and sample script which illustrates problem. But since this > problem is probably also present in stock kernel (not just in Ubuntu), > is it possible to backport fixes to stable 3.2 series? > > 1. http://lartc.org/howto/lartc.cookbook.mtu-discovery.html > 2. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1177507 Sure, what are the fixes? Ben. -- Ben Hutchings Lowery's Law: If it jams, force it. If it breaks, it needed replacing anyway. [-- Attachment #2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 828 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Per route MTU settings are broken in linux kernel 3.2 2013-06-24 12:45 ` Per route MTU settings are broken in linux kernel 3.2 Ben Hutchings @ 2013-06-24 13:08 ` Yura Pakhuchiy 2013-06-26 1:12 ` Ben Hutchings 0 siblings, 1 reply; 3+ messages in thread From: Yura Pakhuchiy @ 2013-06-24 13:08 UTC (permalink / raw) To: Ben Hutchings; +Cc: linux-kernel, netdev, stable On Mon, 2013-06-24 at 13:45 +0100, Ben Hutchings wrote: > On Mon, 2013-06-24 at 15:44 +0700, Yura Pakhuchiy wrote: > > Hello Ben, > > > > Looks like setting per route MTU (as described in [1]) is broken in > > Linux kernel 3.2. I tested with newer Ubuntu kernels 3.5 and 3.8 and it > > looks like problem is fixed there. I filled Ubuntu bug report [2] with > > more details and sample script which illustrates problem. But since this > > problem is probably also present in stock kernel (not just in Ubuntu), > > is it possible to backport fixes to stable 3.2 series? > > > > 1. http://lartc.org/howto/lartc.cookbook.mtu-discovery.html > > 2. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1177507 > > Sure, what are the fixes? Actually, I do not know :-( Ubuntu devs have not fixed this problem in Ubuntu 3.2 kernel. But these commits in mainline kernel looks related: https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=9b04f350057863d1fad1ba071e09362a1da3503e https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=5f2d04f1f9b52604fca6ee08a77972c0df67e082 https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=d851c12b60471188e15e5c8405b289073e8dd025 https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=7f92d334ba19a0d8e96f8f8f092219553367d921 https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ee9a8f7ab2edf801b8b514c310455c94acc232f6 https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=38d523e2948162776903349c89d65f7b9370dadb https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=fa1e492aa3cbafba9f8fc6d05e5b08a3091daf4a https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=05ab86c55683410593720003442dde629782aaac https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=9cb3a50c5f63ed745702972f66eaee8767659acd https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=b44108dbdbaa07c609bb5755e8dd6c2035236251 However I'm not sure whether they all are required or sufficient to fix everything correctly. -- Best regards, Yura ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Per route MTU settings are broken in linux kernel 3.2 2013-06-24 13:08 ` Yura Pakhuchiy @ 2013-06-26 1:12 ` Ben Hutchings 0 siblings, 0 replies; 3+ messages in thread From: Ben Hutchings @ 2013-06-26 1:12 UTC (permalink / raw) To: Yura Pakhuchiy; +Cc: linux-kernel, netdev, stable [-- Attachment #1: Type: text/plain, Size: 2538 bytes --] On Mon, 2013-06-24 at 20:08 +0700, Yura Pakhuchiy wrote: > On Mon, 2013-06-24 at 13:45 +0100, Ben Hutchings wrote: > > On Mon, 2013-06-24 at 15:44 +0700, Yura Pakhuchiy wrote: > > > Hello Ben, > > > > > > Looks like setting per route MTU (as described in [1]) is broken in > > > Linux kernel 3.2. I tested with newer Ubuntu kernels 3.5 and 3.8 and it > > > looks like problem is fixed there. I filled Ubuntu bug report [2] with > > > more details and sample script which illustrates problem. But since this > > > problem is probably also present in stock kernel (not just in Ubuntu), > > > is it possible to backport fixes to stable 3.2 series? > > > > > > 1. http://lartc.org/howto/lartc.cookbook.mtu-discovery.html > > > 2. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1177507 > > > > Sure, what are the fixes? > > Actually, I do not know :-( Ubuntu devs have not fixed this problem in > Ubuntu 3.2 kernel. But these commits in mainline kernel looks related: > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=9b04f350057863d1fad1ba071e09362a1da3503e > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=5f2d04f1f9b52604fca6ee08a77972c0df67e082 > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=d851c12b60471188e15e5c8405b289073e8dd025 > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=7f92d334ba19a0d8e96f8f8f092219553367d921 > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=ee9a8f7ab2edf801b8b514c310455c94acc232f6 > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=38d523e2948162776903349c89d65f7b9370dadb > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=fa1e492aa3cbafba9f8fc6d05e5b08a3091daf4a > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=05ab86c55683410593720003442dde629782aaac > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=9cb3a50c5f63ed745702972f66eaee8767659acd > https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=b44108dbdbaa07c609bb5755e8dd6c2035236251 > > However I'm not sure whether they all are required or sufficient to fix > everything correctly. Sorry, but I really do need someone to tell me exactly what's required. I'm not likely to find the time to work this out myself. Ben. -- Ben Hutchings Knowledge is power. France is bacon. [-- Attachment #2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 828 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] <1372063443.32157.10.camel@linux>
2013-06-24 12:45 ` Per route MTU settings are broken in linux kernel 3.2 Ben Hutchings
2013-06-24 13:08 ` Yura Pakhuchiy
2013-06-26 1:12 ` Ben Hutchings
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