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-This role configures iptables rules in /etc/iptables/rules.v{4,6} to be used by
-iptables-persistent.
+This role configures iptables rules in /etc/iptables/rules.v{4,6}, to be used
+by iptables-persistent.
I found it easier and more flexible to configure a firewall this way; for
example, I found that cloud provider's firewalls are often less flexible.