IP routing

************** I P U D P R O U T I N G *************************** I have dedicated server with fresh installation Uuntu/Debian LEMP with root privileges with 1 main IP and 5 additional IPs. At this moment outbound requests are routeet always over 1 IP - main IP. To check it I use website [login to view URL] Inbound works correctly. I need reconfigure IP routes to set it's own IP for every additional IP in outbound requests. The succes conditions: - remote IP on external website [login to view URL] = real additional IP - properly works all protocols (http, ftp...) - properly works all methods (post, get...) - results of requests return to the correct ip (virtual host configured over nginx). Server have not any admin panel so you must be strong in network administration using commands. What I'm not intersted at this moment and what isn't succes: - advice to use CURLOPT_INTERFACE, - advice to use proxy, - every configuration works what are unnecessary to resolve problem like security, users etc. (It is test server). ****************************************************************************************************************** S I M P L E D E S C R I P T I O N O F P R O B L E M I have 6 IPs: [login to view URL] -> main [login to view URL] -> additional [login to view URL] -> additional [login to view URL] -> additional [login to view URL] -> additional [login to view URL] -> additional You can 5 virtual hosts configured in nginx (or you can configure it if you want). ------------------------------------------------------------------------------------------------------------------ C U R R E N T S I T U A T I O N I have problem with outbound. Using PHP cURL and phantomjs: - when I I'm sending requests to website [login to view URL] using virtual host and IP [login to view URL] I get result IP [login to view URL] - when I I'm sending requests to website [login to view URL] using virtual host and IP [login to view URL] I get result IP [login to view URL] ....... - when I I'm sending requests to website [login to view URL] using virtual host and IP [login to view URL] I get result IP [login to view URL] ------------------------------------------------------------------------------------------------------------------ W H A T D O I W A N T T O A C H I E V E ? Using PHP cURL and phantomjs: - when I will send requests to website [login to view URL] using virtual host and IP [login to view URL] I want get result IP [login to view URL] - when I will send requests to website [login to view URL] using virtual host and IP [login to view URL] I want get result IP [login to view URL] ........ - when I will send requests to website [login to view URL] using virtual host and IP [login to view URL] I want get result IP [login to view URL]