[CentOS] Ifconfig ipv6:permission denied.
Marcelo Ricardo Leitner
marcelo.leitner at gmail.com
Fri Sep 19 20:52:56 UTC 2014
On 18-09-2014 13:57, James Hogarth wrote:
> On 18 Sep 2014 09:07, "dE" <de.techno at gmail.com> wrote:
>>
>> On 09/17/14 21:03, Marcelo Ricardo Leitner wrote:
>>>
>>> One more test. Please check sysctl -a | grep disable_ipv6 output
>>> And if it's =1, set it to 0.
>>>
>>> When NetworkManager is running, it may disable ipv6 on the interface if
> its not configured via NM...
>>>
>> Yes, that was it. Thanks!!
>>
>> But this's the default? The installer should be checked for this.
>>
>
> The default is not to disable ipv6 so something in your environment
> actively did this.
Well... NM needs to put the interface UP so it can reliably monitor the
link state. But that was turning ipv6 addr auto-config on and was
considered a security issue and thus NM started disabling ipv6 on such
(non-configured via NM but monitored) interface to avoid the address
auto-configuration from happening, yet causing this.
The fix (to be able to bring it up without ipv6 address autoconfig)
needed kernel & NM patches and show be available on 7.0.z very soon.
> This does, however, leave me somewhat confused as to how you claimed there
> was a fc00::1001 address on there and you were adding the additional
> address when you saw the refused message...
Such address was on the host, no?
Cheers,
Marcelo
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