Hi All,
If this is not supported in Linux, can I go ahead and file a
bug/enhancement request against the Linux kernel?
Dheeraj
On Tue, Jun 7, 2022 at 3:31 PM Dheeraj Kandula <[email protected]> wrote:
> Thanks Marc for your email. With the grub option, the IPv6 feature itself
> may have been removed from the running Linux kernel. But, I want IPv6
> functionality to be present in the kernel but with the capability to enable
> or disable it.
>
> If disabled, IPv6 should be disabled on current namespaces and future
> namespaces, until I enable IPv6 again.
>
> Is this possible in Linux?
>
> Dheeraj
>
> On Tue, Jun 7, 2022 at 2:38 PM <[email protected]> wrote:
>
>> Dheeraj,
>>
>> You don't need to touch the /etc/sysctl.conf. You need to touch your
>> bootloader configuration file. You can see an example of how to do it here:
>> https://www.thegeekdiary.com/centos-rhel-7-how-to-disable-ipv6/
>>
>> On 07/06/2022 15:33, Dheeraj Kandula <[email protected]> wrote:
>> > Thanks Bjørn for your response. I think I am getting a bit confused
>> here.
>> >
>> > I booted up my Linux VM and set the following in my /etc/sysctl.conf
>> file:
>> >
>> > net.ipv6.conf.all.disable_ipv6=1
>> > net.ipv6.conf.default.disable_ipv6=1
>> >
>> > I saved the file.
>> >
>> > *I rebooted my VM.*
>> >
>> > After reboot, I check the value of
>> > "/sys/module/ipv6/parameters/disable_ipv6". *It is still 0.*
>> >
>> > As it is still 0, the new namespaces are created with IPv6 enabled. Is
>> > this a bug in the kernel code?
>> >
>> > Dheeraj
>> >
>> > On Tue, Jun 7, 2022 at 2:17 PM Bjørn Mork <[email protected]
>> > <mailto:[email protected]>> wrote:
>> >
>> > Dheeraj Kandula <[email protected] <mailto:[email protected]>>
>> writes:
>> >
>> > > On my system I see the following values:
>> > >
>> > > $cat /sys/module/ipv6/parameters/disable_ipv6
>> > > 0
>> >
>> > Yes, that's the default unless you change it..
>> >
>> > > Are you suggesting that "cat
>> > /sys/module/ipv6/parameters/disable_ipv6"
>> > > should be 1?
>> >
>> > Yes, And if you boot with "ipv6.disable_ipv6=1" on the command line,
>> > then it will be.
>> >
>> >
>> > Bjørn
>> >
>> >
>>
>>
