On Wed, 30 Nov 2011 21:25:49 +0100
Eric Dumazet [off-list ref] wrote:

Hi Thomas

In 2005, TC_RED_HARDDROP kernel support was added to RED and GRED
(commit bdc450a0bb1 [PKT_SCHED]: (G)RED: Introduce hard dropping), but
current iproute2 doesnt have user land support.

Is there some patch waiting somewhere, or should we :

- Remove kernel support, since nobody uses it.

- Add iproute2 support.

(Almost) nobody uses RED because they can't figure it out.
According to Wikipedia, VJ says that: 
 "there are not one, but two bugs in classic RED."


But if flag is present, then Thomas should have sent a patch, might have
been lost, that was pre-patchwork days.