[CentOS] Centos 6 - disabling IPv6 addressing

[Robert Moskowitz]

On 03/09/2015 12:55 AM, Ryan Wagoner wrote:
> On Fri, Mar 6, 2015 at 11:52 AM, Robert Moskowitz <rgm at htt-consult.com>
> wrote:
>
>>
>> On 03/06/2015 11:00 AM, Robert Moskowitz wrote:
>>
>>>
>>> On 03/06/2015 10:55 AM, Barry Brimer wrote:
>>>
>>>>
>>>>   IPV6INIT="no"
>>>>> But I am still getting a global IPv6 (and of course local scope).
>>>>>
>>>>> What else do I need to do to disable the listening for RA announcements
>>>>>
>>>>> and setting an IPv6 global address?  I do not want to reboot the box.
>>>>>
>>>> There are other modules, most notably bonding that rely on the ipv6
>>>> module being loaded. What I do is place "options ipv6 disable=1" in
>>>> "/etc/modprobe.d/ipv6.conf". That does require a reboot, which I know you
>>>> are looking to avoid, so you may want to try other methods to remove your
>>>> address in the running configuration.
>>>>
>>> 'All' I need is for the system not to have a global IPv6 address. Then it
>>> will not try to connect to other global IPv6 systems which will reject the
>>> connection, as the IPv6 rDNS cannot be set, given it is a dynamic IPv6
>>> assigned address from the ISP.
>>>
>> I tried:
>>
>> # cat /etc/sysconfig/network
>> NETWORKING=yes
>> HOSTNAME=z9m9z.htt-consult.com
>> NETWORKING_IPV6=no
>> IPV6INIT=no
>>
>>
>> and 'service network restart' but still showing IPv6 addressing.
>
>
> I would try adding the below line to /etc/sysconfig/network.
>
> IPV6_AUTOCONF=no

Added this, did a 'service network restart' and still seeing the IPv6 addr.