[FS#1193] iptables match state not working

[LEDE Bugs]

The following task has a new comment added:

FS#1193 - iptables match state not working
User who did this - Jo-Philipp Wich (jow-)

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State is deprecated, use "-m conntrack --ctstate ESTABLISHED,RELATED" instead of "-m state --state ESTABLISHED,RELATED"
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1193#comment3916