From: Mike Manning <mmann...@brocade.com> Date: Mon, 25 Sep 2017 22:01:36 +0100
> The NS for DAD are sent on admin up as long as a valid qdisc is found. > A race condition exists by which these packets will not egress the > interface if the operational state of the lower device is not yet up. > The solution is to delay DAD until the link is operationally up > according to RFC2863. Rather than only doing this, follow the existing > code checks by deferring IPv6 device initialization altogether. The fix > allows DAD on devices like tunnels that are controlled by userspace > control plane. The fix has no impact on regular deployments, but means > that there is no IPv6 connectivity until the port has been opened in > the case of port-based network access control, which should be > desirable. > > Signed-off-by: Mike Manning <mmann...@brocade.com> Applied, thank you.
