linux-kernel - Re: [RFC] EADDRINUSE from bind() on application restart after killing

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <03031c84-baa0-fe99-b1d7-44963cad0001@codeweavers.com>
Date:   Fri, 14 Oct 2022 12:20:37 -0500
From:   Paul Gofman <pgofman@...eweavers.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     Muhammad Usama Anjum <usama.anjum@...labora.com>,
        "open list:NETWORKING [TCP]" <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [RFC] EADDRINUSE from bind() on application restart after killing

On 10/14/22 11:45, Eric Dumazet wrote:
> On Fri, Oct 14, 2022 at 9:39 AM Paul Gofman <pgofman@...eweavers.com> wrote:
>
> I think it is documented.
>
> man 7 socket
>
>         SO_REUSEADDR
>                Indicates that the rules used in validating addresses
> supplied in a bind(2) call should allow reuse of local addresses.  For
> AF_INET sockets this means
>                that a socket may bind, except when there is an active
> listening socket bound to the address.  When the listening socket is
> bound to INADDR_ANY with  a
>                specific port then it is not possible to bind to this
> port for any local address.  Argument is an integer boolean flag.
>
> You seem to need another way, so you will have to ask this question in IETF.
Thanks a lot, I think it answers my question, I am afraid I was reading 
this a bit wrong.