netdev - socket api problem: can't bind an ipv6 socket to ::ffff:0.0.0.0

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-next>] [day] [month] [year] [list]

Message-ID: <20090316233934.GD32111@codeblau.de>
Date:	Tue, 17 Mar 2009 00:48:10 +0100
From:	Felix von Leitner <felix-kernel@...e.de>
To:	netdev@...r.kernel.org
Subject: socket api problem: can't bind an ipv6 socket to ::ffff:0.0.0.0

Here's an strace:

socket(PF_INET6, SOCK_STREAM, IPPROTO_IP) = 3
fcntl(3, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
bind(3, {sa_family=AF_INET6, sin6_port=htons(6969), inet_pton(AF_INET6, "::ffff:0.0.0.0", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EADDRNOTAVAIL (Cannot assign requested address)

This is supposed to work, and it works on other operating systems, even
on Mac OS X.

I think it used to work on Linux, too.

I'm using 2.6.29-rc7 right now, but others have reported this not
working on distro kernels, too.

Felix
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html