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Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings

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On Sat, 2018-07-14 at 18:39 +0200, Thomas Leuxner wrote:
> Package: linux-image-4.9.0-7-amd64
> Version: 4.9.110-1
> 
> Hi,
> 
> after upgrading today I started seeing these:
> 
> Jul 14 12:46:18 edi kernel: [   29.601249] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
> Jul 14 12:46:24 edi kernel: [   35.920488] sit: non-ECT from 238.163.0.0 with TOS=0x2
> Jul 14 12:46:24 edi kernel: [   35.956189] sit: non-ECT from 238.163.0.0 with TOS=0x2
> Jul 14 12:46:24 edi kernel: [   35.980514] sit: non-ECT from 238.163.0.0 with TOS=0x2
> Jul 14 12:46:25 edi kernel: [   36.207554] sit: non-ECT from 0.12.0.0 with TOS=0xb
> Jul 14 12:46:25 edi kernel: [   36.230568] sit: non-ECT from 0.12.0.0 with TOS=0x6
> Jul 14 12:46:25 edi kernel: [   36.413928] sit: non-ECT from 0.12.0.0 with TOS=0x6
> Jul 14 12:46:25 edi kernel: [   36.437173] sit: non-ECT from 0.12.0.0 with TOS=0x6#

I con't see any changes in the sit driver's receive path since the
previous upstream version (4.9.88), and we don't have any Debian-
specific patches for it, so I don't think this is the result of a
regression.

Is it possible that the network configuration applied after reboot is
not the same as you had applied previously?

The sit module has a module parameter (log_ecn_error) that controls
this log message.  Perhaps that was set to 0/N previously?

Ben.

-- 
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Thomas Leuxner <tlx@leuxner.net> - 2018-07-14 18:50 +0200
  Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Ben Hutchings <ben@decadent.org.uk> - 2018-07-17 23:00 +0200
  Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Ben Hutchings <ben@decadent.org.uk> - 2018-07-18 23:40 +0200
    Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Thomas Leuxner <tlx@leuxner.net> - 2018-07-19 11:40 +0200
      Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Salvatore Bonaccorso <carnil@debian.org> - 2018-07-19 14:50 +0200
        Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Thomas Leuxner <tlx@leuxner.net> - 2018-07-21 12:30 +0200
          Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Salvatore Bonaccorso <carnil@debian.org> - 2018-07-21 13:30 +0200
  Bug#903776: Kernel 4.9.110-1 sit: non-ECT warnings Stéphane Poignant <stephanepoignant@vialis.net> - 2018-07-25 02:00 +0200

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