Changes with nginx 1.3.12 05 Feb 2013
*) Feature: variables support in the "proxy_bind", "fastcgi_bind", "memcached_bind", "scgi_bind", and "uwsgi_bind" directives.
*) Feature: the $pipe, $request_length, $time_iso8601, and $time_local variables can now be used not only in the "log_format" directive. Thanks to Kiril Kalchev.
*) Feature: IPv6 support in the ngx_http_geoip_module. Thanks to Gregor Kališnik.
*) Bugfix: in the "proxy_method" directive.
*) Bugfix: a segmentation fault might occur in a worker process if resolver was used with the poll method.
*) Bugfix: nginx might hog CPU during SSL handshake with a backend if the select, poll, or /dev/poll methods were used.
*) Bugfix: the "[crit] SSL_write() failed (SSL:)" error.
*) Bugfix: in the "client_body_in_file_only" directive; the bug had appeared in 1.3.9.
*) Bugfix: in the "fastcgi_keep_conn" directive.