[SR-Users] rtpengine: Failed to open UDP control connection port

[Richard Fuchs]

On 07/17/2017 12:43 AM, Alex Balashov wrote:
> Reading further into this error message, it sounds like you are using an
> init script for RTPengine which attempts to install the -j RTPENGINE
> rule for both the IPv4 and IPv6 netfilter tables, which are separate,
> using iptables and ip6tables respectively. I believe that is what the
> stock Sipwise init scripts / systemd units do.
>
> If IPv6 is disabled on your host, that's not going to work. Try
> commenting out the ip6tables line (but not the iptables line) in the
> rtpengine init script / unit and see if it makes a difference.
IPv6 not being available would also be my guess for an explanation, and 
would also explain the original error (control UDP socket not being able 
to be opened) as by default the control socket would be opened for both 
IPv4 and IPv6 also.

Cheers