using libipq to create a router

[Eduardo Costa <ecosta@tpk.com.br>]

Hi, there !

I want to create a little program to route connections with libipq and 
nat table.

Something like that: client connects with master server, but it will 
only route this connection to another computer.

Pretty simple, but I need this info to create something bigger. I tried 
to change the IP header packet, but somehow it only worked with ICMP. I 
guess it's a problem with nat/conntrack, but there's no example mixing 
conntrack and libipq.

BTW, I don't want to make a kernel module and a libipt_XXX.so, because I 
think it's a solution bigger than the problem.

Thanks in advance,
Eduardo Costa