[SR-Users] rtpengine with mutiple IPs on the same network.

[Patrick Wakano]

Check your output to the command "ip route show table local".
For a connected network, the kernel will select the source IP based on
these rules. From memory I think, it is possible to change the "src"
parameter to use a different IP, so you can play with that.
Anyway, as a general rule, I don't think having multiple IP addresses on
the same subnet is a good practice. I would recommend breaking that into
multiple subnets so you won't fall under these edge cases.
Cheers,
Patrick

On Sun, 5 Jul 2020 at 15:33, Sergey Safarov <s.safarov at gmail.com> wrote:

> you can also look
>
> https://www.usenix.org/system/files/login/articles/login_summer16_10_anderson.pdf
>
> On Sun, Jul 5, 2020 at 8:02 AM Sergey Safarov <s.safarov at gmail.com> wrote:
>
>> Required configure police based routing
>>
>> https://www.drdobbs.com/policy-routing-in-linux/199100936
>>
>>
>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/configuring-policy-based-routing-to-define-alternative-routes_configuring-and-managing-networking
>>
>>
>> On Sun, Jul 5, 2020 at 2:54 AM David Villasmil <
>> david.villasmil.work at gmail.com> wrote:
>>
>>> I know this is more of a networking routing question, just trying to see
>>> if you can find a better solution than re-architecturing the network.
>>> Although maybe that’s the best approach, since this is a pretty new setup.
>>> Maybe it’s better to do it now and not using work-arounds?
>>>
>>> On Sun, 5 Jul 2020 at 00:39, David Villasmil <
>>> david.villasmil.work at gmail.com> wrote:
>>>
>>>> Hello guys,
>>>>
>>>> I have rtpengine running on a box with ips like this:
>>>>
>>>> external: 172.10.0.10 (advertise 10.10.10.1)
>>>> internal: 172.10.0.11
>>>>
>>>> Both Ips are on the same network.
>>>> When i do rtpengine_manage i set "direction=external
>>>> direction=internal", and the SDP offer is correct.
>>>>
>>>> The problem I'm having is that when rtp tried to send to the internal
>>>> network, the OS (i believe) selects the first interface (external) ip
>>>> 172.10.0.10 to reach the internal network.
>>>> This I suppose is not a great deal, but I would like to separate them
>>>> and only use the internal for internal proxying.
>>>>
>>>> Help is appreciated!
>>>>
>>>> Thanks!
>>>>
>>>> Regards,
>>>>
>>>> David Villasmil
>>>> email: david.villasmil.work at gmail.com
>>>> phone: +34669448337
>>>>
>>> --
>>> Regards,
>>>
>>> David Villasmil
>>> email: david.villasmil.work at gmail.com
>>> phone: +34669448337
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