Package: netbase
Version: 4.45
Severity: important
Tags: ipv6
I've just discovered that netbase now sets the system parameter
bindv6only. This seems completely wrong to me, especially in the light
that acceptance for IPv6 is still very low simply because there's next
to no interoperability with IPv4. Luckily, at least servers can listen
for IPv4 and IPv6 connections with a single socket, using ::ffff:x.x.x.x
addresses for IPv4 clients. I've been busy changing my own code (tons
of stuff) to do just that (i.e. listen to a single IPv6 socket which
will also accept IPv4 connections) and now I find out that this is
disabled per default in Debian...!
The comment in /etc/sysctl.d/bindv6only says:
# This is the default behaviour of almost all modern operating systems.
This is the first time I hear about this. All boxes I'm dealing with
(SunOS, HP-UX, AIX, various Linux distributions) have this questionable
feature disabled and will accept IPv4 connections on an IPv6 socket. The
only operating system I know of that doesn't (didn't?) have a dual mode
IP stack is Windows ;)
-- System Information:
Debian Release: 6.0.2
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-cm1.7-686 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages netbase depends on:
ii initscripts 2.88dsf-13.1 scripts for initializing
and shutt
ii lsb-base 3.2-23.2squeeze1 Linux Standard Base 3.2
init scrip
Versions of packages netbase recommends:
ii ifupdown 0.6.10 high level tools to
configure netw
netbase suggests no packages.
-- no debconf information
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