Comment 3 for bug 1773818

I'm able to run all unit tests now without any failure, I had to enable ipv6 in docker [1] and run the container with the following arguments:

# sudo docker run --sysctl net.ipv6.conf.all.disable_ipv6=0 --privileged bash

The problem was the sysctl call as you pointed out, but it turned out that it failed only with the ipv6 calls because of [2].

[1] https://docs.docker.com/config/daemon/ipv6/
[2] https://github.com/moby/moby/issues/32619