Re: [PATCH v3 net-next] sock: Reset dst when changing sk_mark via setsockopt

From: David Barmann <redacted>
Date: Thu, 8 Nov 2018 08:13:35 -0600

When setting the SO_MARK socket option, if the mark changes, the dst
needs to be reset so that a new route lookup is performed.

This fixes the case where an application wants to change routing by
setting a new sk_mark.  If this is done after some packets have already
been sent, the dst is cached and has no effect.

Signed-off-by: David Barmann <redacted>

Applied.