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Well your wish came true...Enjoy it

Hello everybody! Some guidelines to help us investigate. When you experience the problem please report here all the following information: the fully qualified domain name you could not resolve the server you were connected to the connection mode and protocol (some OpenVPN mode or WireGuard) the DNS block lists you had active, if any the complete output of the command dig or nslookup pertaining to the "problematic" domain name Kind regards

Well… after a couple of days digging deeper into the source code, I was able to make hummingbird 1.1.2 compile and run in a Docker container with working network lock. Clone my fork from https://gitlab.com/fschaeckermann/hummingbird.git and read instructions in README.md I made it compile under Alpine Linux as well, but iptables seems to misbehave in some breaking way. Therefore the Alpine image is not really usable yet. @whiteowl3: I shamelessly copied your work and incorporated it in the Dockerfile - tini and entrypoint.sh and healthcheck.sh including. The client is actually issuing modprobe and iptables commands to create the network lock (using iptables-legacy, maybe that was the reason you couldn’t see any rules?). I haven’t tested with nftables or pf. That might even work under alpine… Also, if ipv6 gets in the picture, things go haywire! But ipv6 and Docker is an altogether different can of worms…. Have fun! And post your results here if you like.