Seems we have some language features not fully documented (like bitshift operators in #1322).

Would be good to go through language grammar and make sure everything is in the reference guide.

What happened:
Tried running Regression test using command ./test/run_regression_tests.sh $PWD/build.
The test

We use kind for integration tests against a kubernetes cluster. We now have a dirty hack to load the built images into the kind docker daemon since when we started using it kind was at a very early stage and didn't have the load command. Now the load command is available so we can just replace the hack with it!

Docs here
https://kind.sigs.k8s.io/docs/user/quick-start/#loading-an-image-into-y

add a file to the output directory that indexes the written files by their paths. for example:
/path/to/file -> write.dev-1.inode-33

Since the kernel's libbpf seems to handle .text ELF sections gracefully, we should probably do that too.

Can we get some performance comparison between polycube and using standard linux facilities (NAT, iptables, etc.)?

CPU usage, PPS, latencies, etc.