[tproxy] doing SNAT after tproxy doing IP spoofing

[Logu]

I have a static SNAT for the user IP address as follows in POSTROUTE nat 
iptable as " 10.0.0.1 <---> 70.0.0.1".
i.e, After doing the IP Spoofing, we need to apply static NAT.

With TPROXY, it is not working as I expected. Instead, it is sending the 
packet with source IP addr as 10.0.0.1.

How do we resolve this issue?

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I guess the tproxy table does the SNAT  before matching with the rules on 
the actual nat table's SNAT chain and hence it may not be possible.

-logu