iptables tutorial on DNAT

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Hi,

I was reading the DNAT part of the IPTABLES tutorial
and have encountered quite confusing.

In section 6.5.2, near the end it writes:

iptables -t nat -A OUTPUT --dst $INET_IP -p tcp --dport 80 \
    -j DNAT --to-destination $HTTP_IP

Is this a mistake?  I used the above line (with
some modifications to suit my setup) and I get an
invalid agrument.

Also, I noticed that the DNAT rules doesn't
include the -i eth? argument.  Is it necessary?

Any clarifications appreciated.

Edmund


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