From: Alexander Holler <holler@ahsoftware.de>
To: netdev@vger.kernel.org
Subject: Disable IPv4-mapped - enforce IPV6_V6ONLY
Date: Fri, 22 Feb 2013 16:21:26 +0100 [thread overview]
Message-ID: <51278CF6.2060402@ahsoftware.de> (raw)
Hello,
I'm searching for a way to either enforce IPV6_V6ONLY or to block
IPv4-mapped addresses on ipv6-sockets (e.g. by using iptables) system-wide.
E.g. net.ipv6.bindv6only doesn't help if something calls
int v6on = 0;
setsockopt(sd, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&v6on, sizeof(v6on))
In such a case I still want to disable or block IPv4-mapped addresses on
that socket, even if the program thinks it nows it better.
Until now I haven't found a solution.
Regards,
Alexander
next reply other threads:[~2013-02-22 15:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-22 15:21 Alexander Holler [this message]
2013-02-23 20:44 ` Disable IPv4-mapped - enforce IPV6_V6ONLY Alexander Holler
2013-02-25 11:44 ` YOSHIFUJI Hideaki
2013-02-25 13:23 ` David Laight
2013-02-25 14:47 ` Alexander Holler
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