lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Tue, 5 Jul 2022 17:50:29 +0200
From:   Richard Gobert <richardbgobert@...il.com>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org,
        kuba@...nel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] net: Fix IP_UNICAST_IF option behavior for connected
 sockets

On Tue, Jun 28, 2022 at 03:08:48PM +0200, Paolo Abeni wrote:
> This also changes a long-established behavior for such socket option.
> It can break existing application assuming connect() is not affected by
> IP_UNICAST_IF. I'm unsure we can accept it.

The IP_UNICAST_IF option was initially introduced for better compatibility
with the matching Windows socket-option. Its goal was better support for
wine applications.
This patch improves the compatibility even further since Windows behaves
this way for connect()ed sockets.

Also, I have not been able to find any examples of Linux applications
that use IP_UNICAST_IF with connect(). It would be quite confusing to use
this sockopt and expect that it would not affect your socket.
I think that unless someone finds an example of such a use case, then it
is better to accept this patch to improve compatibility for applications
that run with wine.

What are your thoughts on this?

Regards,
Richard

Powered by blists - more mailing lists