rtpengine: UDP: bad checksum in dmesg

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rtpengine: UDP: bad checksum in dmesg

Abdoul Osséni
Hello,

Since i installed rtpengine, I have many messages like "UDP: bad checksum". 

[383818.303391] UDP: bad checksum. From x.x.x.x:7272 to x.x.x.x:45898 ulen 58
[383819.671083] UDP: bad checksum. From x.x.x.x:7272 to x.x.x.x:45898 ulen 58
[383819.943360] UDP: bad checksum. From x.x.x.x:7272 to x.x.x.x:45898 ulen 58
[383821.516016] UDP: bad checksum. From x.x.x.x:7272 to x.x.x.x:45898 ulen 58
[383821.663985] UDP: bad checksum. From x.x.x.x:7272 to x.x.x.x:45898 ulen 58

Do you have any idea where to start investigating?

Env:

debian : 

  • jessie
  • kernel : 3.16.0-4-amd64
  • rtpengine : 5.3.0.0+0~mr5.3.0.0
  • kamailio : 5.0.1
Regards
--
Abdoul OSSENI


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Re: rtpengine: UDP: bad checksum in dmesg

Daniel Tryba-2
On Mon, Jun 12, 2017 at 08:30:15AM +0200, Abdoul Osséni wrote:
> [383821.663985] UDP: bad checksum. From x.x.x.x:7272 to x.x.x.x:45898 ulen
> 58
>
> Do you have any idea where to start investigating?

This is not a problem of rtpengine, either the checksums of the incoming
packets are corrupt or the checksumming in the kernel is getting
corrupted (could be a kernel bug or an ethernet card/driver problem in the
case of offloading (see ethtool options to disable if possible)).


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