Netdev List
 help / color / mirror / Atom feed
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net] ipv6: protect protocols not handling ipv4 from v4 connection/bind attempts
Date: Wed, 22 Jan 2014 02:08:42 +0100	[thread overview]
Message-ID: <20140122010842.GB20565@order.stressinduktion.org> (raw)
In-Reply-To: <20140121.165941.1593478240200500821.davem@davemloft.net>

On Tue, Jan 21, 2014 at 04:59:41PM -0800, David Miller wrote:
> From: Hannes Frederic Sowa <hannes@stressinduktion.org>
> Date: Mon, 20 Jan 2014 05:16:39 +0100
> 
> > Some ipv6 protocols cannot handle ipv4 addresses, so we must not allow
> > connecting and binding to them. sendmsg logic does already check msg->name
> > for this but must trust already connected sockets which could be set up
> > for connection to ipv4 address family.
> > 
> > Per-socket flag ipv6only is of no use here, as it is under users control
> > by setsockopt.
> > 
> > Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
> 
> Applied.  Is the plan to add support to at least ping?

Yes, this is planned but for the meantime we should disable it.

Thanks!

      reply	other threads:[~2014-01-22  1:08 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-20  4:16 [PATCH net] ipv6: protect protocols not handling ipv4 from v4 connection/bind attempts Hannes Frederic Sowa
2014-01-22  0:59 ` David Miller
2014-01-22  1:08   ` Hannes Frederic Sowa [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20140122010842.GB20565@order.stressinduktion.org \
    --to=hannes@stressinduktion.org \
    --cc=davem@davemloft.net \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox