About Q1, I am not sure how to interpret your answer, RTP engine is using IPtables with the kernel module, but you need to build it properly and load it, did you do it explicitly ?
The step to load it : ``` # RUN echo ">>>> building IP iptables-extension" \ # && cd /git/rtpengine/iptables-extension \ # && cp libxt_RTPENGINE.so $(pkg-config xtables --variable=xtlibdir)
# RUN echo ">>>> building Kernel module" \ # && cd /git/rtpengine/kernel-module \ # && make && cp xt_RTPENGINE.ko /lib/modules/$(uname -r)/updates \ # && depmod -a
```