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Re: Permanent Use of IPv4

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Reco composed on 2019-02-15 18:23 (UTC+0300):

> On Fri, Feb 15, 2019 at 10:13:14AM -0500, Stephen P. Molnar wrote:

>> Thanks for help from this gropup I can force the use of IPv4 by running:  sysctl -w net.ipv6.conf.all.disable_ipv6=1.
> ...
>> My question is how can I implement the sysctl statement on boot?

> echo 'net.ipv6.conf.all.disable_ipv6 = 1' > /etc/sysctl.d/noipv6.conf

There already may be a file there for the purpose, maybe better to take a looksee first instead of
possibly blindly overwriting:

####
#
# /etc/sysctl.conf is meant for local sysctl settings
#
# sysctl reads settings from the following locations:
#   /boot/sysctl.conf-<kernelversion>
#   /lib/sysctl.d/*.conf
#   /usr/lib/sysctl.d/*.conf
#   /usr/local/lib/sysctl.d/*.conf
#   /etc/sysctl.d/*.conf
#   /run/sysctl.d/*.conf
#   /etc/sysctl.conf
#
# To disable or override a distribution provided file just place a
# file with the same name in /etc/sysctl.d/
#
# See sysctl.conf(5), sysctl.d(5) and sysctl(8) for more information
#
####

To me, "on boot" implies something on the kernel cmdline, e.g.:

	ipv6.disable=1

Even using that I sometimes find ipv6 errors in dmesg that can be cured via an avahi config change.
-- 
Evolution as taught in public schools is religion, not science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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Thread

Permanent Use of IPv4 "Stephen P. Molnar" <s.molnar@sbcglobal.net> - 2019-02-15 16:20 +0100
  Re: Permanent Use of IPv4 Reco <recoverym4n@enotuniq.net> - 2019-02-15 16:30 +0100
    Re: Permanent Use of IPv4 Felix Miata <mrmazda@earthlink.net> - 2019-02-15 17:00 +0100
      Re: Permanent Use of IPv4 Reco <recoverym4n@enotuniq.net> - 2019-02-15 17:10 +0100
        Re: Permanent Use of IPv4 Felix Miata <mrmazda@earthlink.net> - 2019-02-15 17:20 +0100
          Re: Permanent Use of IPv4 Reco <recoverym4n@enotuniq.net> - 2019-02-15 17:50 +0100
            Re: Permanent Use of IPv4 Felix Miata <mrmazda@earthlink.net> - 2019-02-15 18:20 +0100
              Re: Permanent Use of IPv4 "Stephen P. Molnar" <s.molnar@sbcglobal.net> - 2019-02-15 20:10 +0100
                Re: Permanent Use of IPv4 Curt <curty@free.fr> - 2019-02-15 20:40 +0100
                Re: Permanent Use of IPv4 David Wright <deblis@lionunicorn.co.uk> - 2019-02-15 20:40 +0100
                Re: Permanent Use of IPv4 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-02-15 22:20 +0100
            Re: Permanent Use of IPv4 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-02-15 22:20 +0100
              Re: Permanent Use of IPv4 Reco <recoverym4n@enotuniq.net> - 2019-02-16 09:50 +0100
  Re: Permanent Use of IPv4 Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-02-15 22:30 +0100

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