[Bug 1064] iptables-save fails silently in unprivileged lxc/lxd container

[bugzilla-daemon at netfilter.org]

https://bugzilla.netfilter.org/show_bug.cgi?id=1064

--- Comment #4 from Philipp Gassmann <phiphi at phiphi.ch> ---
Thank you. I don't have experience testing kernels. I just use regular Ubuntu.

Can you quickly explain what was changed that should fix the issue? how is it
fixed, should iptables-save now work within unprivileged lxc/lxd containers?

Steps to reproduce:

    Install ubuntu 16.04 with btrfs filesystem.
    Install lxd: apt install lxd
    lxd init
    create a new container: lxc launch ubuntu:xenial iptables-test
    Enter container: lxc exec iptables-test -- bash
    Add iptable rule: iptables -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT
    List rules: iptables -nL
    execute: iptables-save
    No output is returned

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