[arch-general] sysctl.conf.pacsave messages of archlinux.org and archlinux.de are different
Hi, archlinux.org claims "If you never customized /etc/sysctl.conf, you have nothing to do", while archlinux.de's claim is that only those settings "# Protection from the SYN flood attack. net.ipv4.tcp_syncookies = 1 # Disable packet forwarding. net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0" were used by a /etc/sysctl.conf that never was customized. I never customized the /etc/sysctl.conf on my machine, but it contains other enabled entries too. $ grep -v "#" /etc/sysctl.conf.pacsave net.ipv4.tcp_syncookies = 1 net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0 kernel.sysrq = 0 vm.swappiness = 10 fs.inotify.max_user_watches = 524288 This is confusing. Regards, Ralf
On 2013-09-18 10:39, Ralf Mardorf wrote:
Hi,
archlinux.org claims "If you never customized /etc/sysctl.conf, you have nothing to do", while archlinux.de's claim is that only those settings
"# Protection from the SYN flood attack. net.ipv4.tcp_syncookies = 1 # Disable packet forwarding. net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0"
were used by a /etc/sysctl.conf that never was customized.
I never customized the /etc/sysctl.conf on my machine, but it contains other enabled entries too.
At least on my laptop and desktop, which are both fairly old installations, these are the only ones in there. $ grep -v '^#\|^$' /etc/sysctl.conf net.ipv4.tcp_syncookies = 1 net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0 Maybe it was modified without your knowledge?
On Wed, Sep 18, 2013 at 10:39 AM, Ralf Mardorf <ralf.mardorf@alice-dsl.net> wrote:
Hi,
archlinux.org claims "If you never customized /etc/sysctl.conf, you have nothing to do", while archlinux.de's claim is that only those settings
"# Protection from the SYN flood attack. net.ipv4.tcp_syncookies = 1 # Disable packet forwarding. net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0"
were used by a /etc/sysctl.conf that never was customized.
I never customized the /etc/sysctl.conf on my machine, but it contains other enabled entries too.
$ grep -v "#" /etc/sysctl.conf.pacsave net.ipv4.tcp_syncookies = 1 net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0 kernel.sysrq = 0 vm.swappiness = 10 fs.inotify.max_user_watches = 524288
This is confusing.
Regards, Ralf
They are right. Something must have altered your sysctl.conf.
On Wed, 2013-09-18 at 19:41 +0200, Chris Down wrote:
Maybe it was modified without your knowledge?
On Wed, 2013-09-18 at 19:41 +0200, Karol Blazewicz wrote:
They are right. Something must have altered your sysctl.conf.
Thank you for your replies. This is my thought too, because I tested different DEs, among others Mate, not from the official repositories. I don't claim that it was done by the Mate repository, but I already had a flame war with the Mate folks, regarding to the conflicts they cause. FWIW, I didn't copy the pacsave and when using my "main" DE XFCE4 I doesn't experience an issue. Regards, Ralf
[2013-09-18 10:39:55 +0200] Ralf Mardorf:
archlinux.org claims "If you never customized /etc/sysctl.conf, you have nothing to do", while archlinux.de's claim is that only those settings
"# Protection from the SYN flood attack. net.ipv4.tcp_syncookies = 1 # Disable packet forwarding. net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0"
were used by a /etc/sysctl.conf that never was customized.
These were the only *uncommented* settings in our old sysctl.conf but, since they are kernel defaults now, there is no need to put them in any sysctl conf file anymore. The meaning was probably lost in translation, which is not surprising as in German it is hard to make precise statements with great accuracy. When in doubt, always trust the one true original archlinux.org. :) -- Gaetan
On Wed, Sep 18, 2013 at 8:13 PM, Gaetan Bisson <bisson@archlinux.org> wrote:
[2013-09-18 10:39:55 +0200] Ralf Mardorf:
archlinux.org claims "If you never customized /etc/sysctl.conf, you have nothing to do", while archlinux.de's claim is that only those settings
"# Protection from the SYN flood attack. net.ipv4.tcp_syncookies = 1 # Disable packet forwarding. net.ipv4.ip_forward = 0 net.ipv6.conf.all.forwarding = 0"
were used by a /etc/sysctl.conf that never was customized.
These were the only *uncommented* settings in our old sysctl.conf but, since they are kernel defaults now, there is no need to put them in any sysctl conf file anymore.
The meaning was probably lost in translation, which is not surprising as in German it is hard to make precise statements with great accuracy.
Is that so? https://bbs.archlinux.de/viewtopic.php?id=24829 seems to say exactly that: these settings aren't needed anymore because they're kernel defaults now. Ein Volk, ein Reich, ein language - the Mighty Mophin English language! ;P
When in doubt, always trust the one true original archlinux.org. :)
-- Gaetan
participants (4)
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Chris Down
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Gaetan Bisson
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Karol Blazewicz
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Ralf Mardorf