netdev - Re: [PATCH net-next 1/2] UDP tunnel encapsulation module for tunnelling different protocols like MPLS,IP,NSH etc.

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Date:   Thu, 7 Nov 2019 14:13:47 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Jiri Benc <jbenc@...hat.com>
Cc:     Martin Varghese <martinvarghesenokia@...il.com>,
        Network Development <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Jonathan Corbet <corbet@....net>, scott.drennan@...ia.com,
        martin.varghese@...ia.com
Subject: Re: [PATCH net-next 1/2] UDP tunnel encapsulation module for
 tunnelling different protocols like MPLS,IP,NSH etc.

On Thu, Nov 7, 2019 at 2:05 PM Jiri Benc <jbenc@...hat.com> wrote:
>
> On Thu, 7 Nov 2019 13:59:23 -0500, Willem de Bruijn wrote:
> > This still needs only one socket, right? Just fall back to inet if
> > ipv6 is disabled.
>
> What would happen if IPv6 is disabled while the tunnel is operating?

How do you disable ipv6 at runtime?

rmmod is no longer allowed as of commit 8ce440610357 ("ipv6: do not
allow ipv6 module to be removed"). The commit specifically mentions a
dependency by vxlan; that sounds quite similar to this.