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I am running a docker image in ubuntu with following command

sudo docker run --cap-add=NET_ADMIN -it --rm -v $(pwd):/root <docker_image>:ver1.0

I get following error

docker [Errno 2] ip6tables v1.6.1: can't initialize ip6tables table `filter': Table does not exist (do you need to insmod?)

I googled around and many suggestions were to disable ipv6 on local machine since ip6 table can't be disabled per container basis.

Finally I found a work around which is to make an entry to prevent probing ip6table.

sudo modprobe ip6table_filter

What is the solution?

pissall
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Kanhaiya P. Baranwal
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  • If you need to change the host's firewall settings, you should do it using a program running directly on the host. A design goal of Docker is that this is difficult to do from inside the container. – David Maze Nov 06 '19 at 11:01

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