rc.d/natd loads ipdivert.ko too late

[Mykola Dzham]

Currently starting natd moved to separate script rc.d/natd . In this
script ipdivert is set in required_modules . But rc.d/natd called from
rc.firewall after loading firewall rules.
As result, when no ipdivert in kernel, firewall_type is OPEN or CLIENT
and natd_enable is set to yes, rc.firewall attempt to add rule
${fwcmd} add 50 divert natd ip4 from any to any via ${natd_interface}
and error
ipfw: getsockopt(IP_FW_ADD): Invalid argument
occurs.

I think correct solution is add natd_enable checking into ipfw prestart
function (patch attached). Is this correct?

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