On Tue, 31 Oct 2017 14:54:52 -0700
Christoph Paasch [off-list ref] wrote:

This patch adds fastopen_no_cookie option to enable/disable TCP fastopen
without a cookie on a per-route basis.

Support in Linux was added with 71c02379c762 (tcp: Configure TFO without
cookie per socket and/or per route).

Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Christoph Paasch <redacted>

Applied to net-next branch of iproute2.