Hey,
I need to rewrite the $tU variable on a packet before it is relayed. It is ok if the change is only on the relayed packet and the $tU variable change. The important thing is that I modify the To header, it seems that rewritting $tU would be the easiest.
I know that user agents do not like this changing, but I am changing it on an intermediary server and when the reply comes back, I change it back to the original value.
Thanks!
David