On Mon, Sep 9, 2013 at 4:15 PM, Nikolai Gorchilov <niki@xxxxxxxx> wrote: > User's original port seems to be an easy option in TPROXY mode I did a simple test and found the kernel will emit EADDRINUSE when you bind on user's ip:port... So, a more complicated solution is needed. Keeping track of all the used ports per IP (both users, and already auto-selected by the software) and auto-select from the remaining... :(