Hi,
I am trying to change the IP of a TCP packet coming from client and send it to
a server. Client ----->freebsd box --> Server. Let's say packet coming out
from client has source IP: 1.1.1.1 and dst IP: 1.1.1.10, I am changing the IP
of that packet to 1.1.1.100 in ether_input function. Reason behind changing it
in ether_input is to do this NAT prior to hit any IPFW rule.
Problem is that packet is not been seen on server. I did check the code path
taken without changing ip and with changing ip all the way to ipfw code and it
looks like it is not dropping there. I am also recalculating the ip checksum so
this cant be an issue either. Can someone suggest me what I am doing wrong?
Puneet
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