linux-kernel - Re: [PATCH] sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket

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Message-ID: <20200624203123.GC47547@localhost.localdomain>
Date:   Wed, 24 Jun 2020 17:31:23 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     minyard@....org
Cc:     Xin Long <lucien.xin@...il.com>,
        Michael Tuexen <Michael.Tuexen@...chi.franken.de>,
        Yasevich <vyasevich@...il.com>,
        Neil Horman <nhorman@...driver.com>,
        linux-sctp@...r.kernel.org, linux-kernel@...r.kernel.org,
        Corey Minyard <cminyard@...sta.com>
Subject: Re: [PATCH] sctp: Don't advertise IPv4 addresses if ipv6only is set
 on the socket

On Tue, Jun 23, 2020 at 11:04:17AM -0500, minyard@....org wrote:
> From: Corey Minyard <cminyard@...sta.com>
> 
> If a socket was set ipv6only, it would still send IPv4 addresses in the
> init and init ack packets.  So don't add IPv4 addresses to ipv6only
> sockets.
> 
> Based on a patch by Xin Long <lucien.xin@...il.com>
> 
> Signed-off-by: Corey Minyard <cminyard@...sta.com>
> ---
> I have tested this and it seem to fix the issue.  However, I'm wondering
> if it might be better to fix it where the addresses are put into the
> association as opposed to where they are put into the message.

Yes, it is. It even highlights why this issue was there in the first
place. Sending a patch right after this email.

  Marcelo