apf fix: unable to load iptables module (ip_tables)

While working with APF on servers, you might normally get to see the following error,
# apf -r
apf(2042): {glob} flushing & zeroing chain policies
apf(2042): {glob} firewall offline
apf(3179): {glob} activating firewall
apf(3284): {glob} unable to load iptables module (ip_tables), aborting.
apf(3179): {glob} firewall initalized
apf(3179): {glob} fast load snapshot saved
Your kernel is compiled with iptables statically instead of as a [...]

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