Subject: qdisc and down links (regression)

From: Stephen Hemminger <[email-masked]>
Date: Thu, 7 Aug 2008 14:30:36 -0700

Before the mulitqueue changes in 2.6.27-rc it was possible to setup
queueing disciplines before the link came up (carrier active). This
no longer works. If link is down, the qdisc is the noop_qdisc and
any configuration changes don't seem to be shown.

This probably will break ISP's (and other users whose links aren't always
on) that use traffic shaping.

For example, try wondershaper or similar script before boot; all the
tc commands will fail.