netdev - Matching unbound sockets for VRF

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Message-ID: <20220324171930.GA21272@EXT-6P2T573.localdomain>
Date:   Thu, 24 Mar 2022 13:19:30 -0400
From:   Stephen Suryaputra <ssuryaextr@...il.com>
To:     netdev@...r.kernel.org, rshearma@...tta.att-mail.com,
        mmanning@...tta.att-mail.com, dsahern@...il.com
Subject: Matching unbound sockets for VRF

Hello,

After upgrading to a kernel version that has commit 3c82a21f4320c ("net:
allow binding socket in a VRF when there's an unbound socket") several
of our applications don't work anymore. We are relying on the previous
behavior, i.e. when packets arrive on an l3mdev enslaved device, the
unbound sockets are matched.

I understand the use case for the commit but given that the previous
behavior has been there for quite some time since the VRF introduction,
should there be a configurable option to get the previous behavior? The
option could be having the default be the behavior achieved by the
commit.

Thanks,

Stephen.