Hi all, I've just updated my patches for proxy protocol in nginx 1.4.x. They are avaiable here: https://wiki.bedis.eu/nginx/nginx_proxy_protocol_patch
Note in that version, accept_proxy_protocol is not a server option anymore, it is now a bind option. Please try it and report any issue / bug / success story. (the wiki hosting the page above uses the patch, of course) Baptiste

