[FS#945] firewall3 is missing iptables dependency

[LEDE Bugs]

The following task has a new comment added:

FS#945 - firewall3 is missing iptables dependency
User who did this - Jo-Philipp Wich (jow-)

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The firewall3 does not call iptables but interfaces directly with the kernel through libxtables.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=945#comment3184