Hi,
Did you heard about proxy-protocol ?
http://haproxy.1wt.eu/download/1.5/doc/proxy-protocol.txt
This is specific protocol over TCP to chains a software to reverse
proxies and proxies without while keeping client informations like
source IP, source TCP port, dest IP, dest TCP port.
Here is a link to get some informations about it :
http://blog.exceliance.fr/haproxy/proxy-protocol/
This protocol is not yet a RFC, but can be considered as experimental.
Does that can of thing can interest you guys ?
--
Beber