Re: Is there a way to stop ipv6 leakage without turning off ipv6?

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On 04/06/17 06:57, Stephen Morris wrote:
> Hi Ed, just as a side issue to this, because my ISP (I don't know
> about my VPN provider) IPv6 at all for anything, I was setting IPv6 to
> 'ignore' via Networkmanager in KDE (Gnome doesn't seem to have the
> same options) but that was causing messages in the logs at boot time
> about IPv6 not being ready. How do we stop the network from attempting
> to activate IPv6 and then producing these messages when it has been
> turned off?


(We inadvertently went off list...So I will reproduce what I sent Steve
here)

Early AM here in Taiwan.  No coffee yet.    

I think you are saying your ISP isn't providing IPv6 support at all and
that you'd like to totally disable IPv6.  If that is the case then you
can do this by adding ipv6.disable=1 to the kernel boot parameters in grub.

If I misunderstood your question let me know and I'll try again after
coffee.  

Later, with still no coffee.....

I decided to do a test and add ipv6.disable=1 to the kernel parameter on
one of my VM's.  In the past, this was sufficient.  However, doing only
this now results in selinux errors.  To avoid those you also need to add
"net.ipv6.conf.all.disable_ipv6 = 1" to /etc/sysctl.conf.


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