netdev - Re: [PATCH net] net: vxlan: fix crash when interface is created with no group

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Message-ID: <OF1B9D1A33.8FF4FDD8-ON87257CA0.00509C57-87257CA0.00509C61@us.ibm.com>
Date:	Wed, 19 Mar 2014 08:40:29 -0600
From:	David Stevens <dlstevens@...ibm.com>
To:	Mike Rapoport <mike.rapoport@...ellosystems.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net] net: vxlan: fix crash when interface is created with no
 group



-----Mike Rapoport <mike.rapoport@...ellosystems.com> wrote: -----

>I'm not really familiar with v4 and v6 interoperability, but the
>vxlan_socket_create will create v6 socket only if IPv6 is explicitly
>requested.
>Would it be possible to receive IPv6-encapsulated packets from IPv4
>socket?

    Yes, if it's bound to INADDR_ANY or "::", which would be the case
when "vxlan_dev->saddr" aka "ip ... local XXXX"  is not specified.

    And it's a good thing, if mixing protocols is what you want, but I
think we need to make sure the admin can choose whether it's v4, v6
or both.

                                                                   +-DLS

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