What modules do I need for MASQUERADE?

["sean darcy" <seandarcy@xxxxxxxxxxx>]

I'm trying to run a simple nat on a redhat rawhide kernel:

/sbin/iptables -t nat     -F
/sbin/iptables -t nat     -A POSTROUTING -o  eth0              -j MASQUERADE

What modules do I need to insmod?

Is /sbin/modprobe iptable_nat  all I need?

thanks
sean

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