iptables forwarding question

[James Pifer]

> Try
> 
> iptables -i ppp0 -t nat -A PREROUTING -j DNAT -s $remote_ip -d $local_ip --to-destination $internal_ip
> 
> -- 
> Benjamin Franz
> 

That worked, but performance is terrible, but it's only terrible in the
return direction. I confirmed that on the other end the quality is fine,
but on my end it's not even usable. Any ideas? I wonder why the return
is so awful. 

Thanks,
James