Hello,
Does anybody know what this warning which i found in the docs http://nginx.org/en/docs/http/ngx_http_core_module.html#listen in the context of fastopen means?

"Do not enable this feature unless the server can handle receiving the same SYN packet with data more than once."

My kernel is 4.9.9 and cat /proc/sys/net/ipv4/tcp_fastopen is 3 so this feature is supported. Is this enought ?