[SR-Users] RTPENGINE question

[Andrew Chen]

Thanks Alex.

So it turns out my rtpengine stopped working after our latest kernel
upgrade to:

Linux sjomainrtpe30 5.3.0-1035-aws #37-Ubuntu SMP Sun Sep 6 01:17:09 UTC
2020 x86_64 x86_64 x86_64 GNU/Linux

at the time, I was running an older version 8.0.x so I recompiled all the
ngcp packages under this kernel and completed the installation without
issues.

As soon as we started making test calls, I received 0 audio from those test
endpoints.  Looking at the rtpengine logs, I see several messages that's
quite concerning:

Sep 11 18:43:41 sjomainrtpe30 kernel: [   13.434623] xt_RTPENGINE: loading
out-of-tree module taints kernel.
Sep 11 18:43:41 sjomainrtpe30 kernel: [   13.434670] xt_RTPENGINE: module
verification failed: signature and/or required key missing - tainting kernel
Sep 11 18:43:41 sjomainrtpe30 kernel: [   13.434938] Registering
xt_RTPENGINE module - version 9.0.1.0+0~mr9.0.1.0

and

Sep 11 18:49:50 sjomainrtpe30 rtpengine[1030]: WARNING:
[2-7859 at 2600:1f1c:4ff:3e01:f64d:2f67:c0fa:c931
port 50000]: No support for kernel packet forwarding available (decryption
cipher or HMAC not supported by kernel module)

which I assume is due to the first error I pasted.

So I tried

- rebooting the system which maybe the module wasn't loaded properly.
- I reran modprobe to make sure the module is installed
- I ran some dkms command to see if any error pop up due to the kernel
version I'm running and I see no errors:

dkms status
falco, 0.20.0+d77080a, 5.3.0-1032-aws, x86_64: installed
falco, 0.20.0+d77080a, 5.3.0-1035-aws, x86_64: installed
ngcp-rtpengine, 9.0.1.0+0~mr9.0.1.0, 5.3.0-1032-aws, x86_64: installed
ngcp-rtpengine, 9.0.1.0+0~mr9.0.1.0, 5.3.0-1035-aws, x86_64: installed

So I'm running out of options.

Any advice?


On Fri, Sep 11, 2020 at 3:17 PM Alex Balashov <abalashov at evaristesys.com>
wrote:

> There is an RTPEngine mailing list, I believe, but RTPEngine questions
> are often posed here given its close association with Kamailio. What's
> going on?
>
> On 9/11/20 2:57 PM, Andrew Chen wrote:
> > Hey guys,
> >
> > Is this the right place to ask about rtpengine (ngcp) related issues
> > with kernel packet forwarding?
> >
> > Thanks.
> >
> > --
> > Andy Chen
> > Sr. Telephony Lead Engineer
> > achen@ <mailto:achen at thinkingphones.com>fuze.com <http://fuze.com>
> >
> >
> >
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> --
> Alex Balashov | Principal | Evariste Systems LLC
>
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-- 
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <achen at thinkingphones.com>fuze.com

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