I am testing with fwbuilder and IPv6. Creating a IPv6 policy for Linux iptables adds the following line to the script:
echo 1 > /proc/sys/net/ipv4/ip_forward
which is not completely correct. Should be better a:
echo 1 >/proc/sys/net/ipv6/conf/all/forwarding
if the script is marked IPv6 and uses ip6tables.
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