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Re: Permanent Use of IPv4




On 2019-02-15, Stephen P. Molnar <s.molnar@xxxxxxxxxxxxx> wrote:
>
> On 02/15/2019 12:11 PM, Felix Miata wrote:
>> Reco composed on 2019-02-15 19:48 (UTC+0300):
>>
>>> On Fri, Feb 15, 2019 at 11:17:06AM -0500, Felix Miata wrote:
>>>> I made ipv6.disable=1 a standard option here at least as far back as 2011. If it ever caused a
>>>> problem I never found out about it.
>>> That's a fine example of "works for me" approach.
>>> And I've seen multiple cases where "disable IPv6" equaled "non-booting OS".
>> Maybe I left out an important point, which is that "for me" means hundreds of installations
>> including most of the historically most popular distros, Debian, *buntu, Mint, Fedora, openSUSE,
>> Mageia, Gentoo and a few others.
>>
>> I have a hard time imagining a dependency on ipv6 to be able to boot, even including thin client or
>> PXE, but then I don't know anything of any prospect of booting from outside a firewall where ipv6
>> might be a sole option.
> Thanks for all of the responses.
>
> I elected to go with;
>
> echo 'net.ipv6.conf.all.disable_ipv6 = 1' > /etc/sysctl.d/noipv6.conf
>
> which did, indeed, result in the file being created.
>
> However, there is only one problem, it didn't work.
>

I did see an (Ubuntu?) bug to that exact effect (maybe not at all
pertinent, in which case, sorry).

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1771222