+ upgrade_tasks:
+ - name: blank ipv6 rule before activating ipv6 firewall.
+ tags: step3
+ shell: cat /etc/sysconfig/ip6tables > /etc/sysconfig/ip6tables.n-o-upgrade; cat</dev/null>/etc/sysconfig/ip6tables
+ args:
+ creates: /etc/sysconfig/ip6tables.n-o-upgrade