Thanks for the report. I read the ansible bug but this issue is actually
coming from the underlying iptables tool. Something on the system is
manipulating the firewall via iptables at the same time that the ufw
command is being run. As described, this would happen with any firewall
software. If only ufw is being used with ansible, perhaps ensure that
the ufw commands are not being run in parallel. The upstream bug
referenced docker, which will also manipulate the firewall with
iptables; perhaps ensure that ufw configuration is applied before docker
is started.
I'm going to mark this bug as Invalid for now. Feel free to provide more
information if you feel this is specific to ufw.
** Changed in: ufw (Ubuntu)
Status: Confirmed => Invalid
** Changed in: ufw (Ubuntu)
Status: Invalid => New
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https://bugs.launchpad.net/bugs/1911637
Title:
Another app is currently holding the xtables lock
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