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

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Yes, use your firewall to drop all

Verstuurd vanaf mijn iPhone

> Op 2 apr. 2017 om 00:25 heeft Ed Greshko <ed.greshko@xxxxxxxxxxx> het volgende geschreven:
>
>> On 04/01/17 21:42, William Oliver wrote:
>> I'm using Fedora 25 on an HP laptop with KDE.  I commonly use a VPN
>> service, but it leaks ipv6 addresses.  This seems to be a common
>> problem with VPN and ipv6, from what I've read on the internet.
>>
>> So, I've turned off ipv6 for my wireless interface, and that seems to
>> solve the problem.  However, I just can't help but think that this will
>> eventually cause a problem somewhere.
>>
>> Is there a better solution for ipv6 leakage with a vpn on Fedora 25
>> other than just turning it off?
>
> Do you use IPv6 via your ISP or a tunnel under non-VPN situations?  How
> many network interfaces do you have?
>
> I thought that by a leak it is meant that when you're connected to a VPN
> and you'd want all traffic to go via the VPN and your VPN provider
> doesn't concurrently support IPv4 and IPv6 (I don't know one that does)
> there may be cases when you make a DNS request you get the IPv6 address
> of the site and thus your traffic doesn't go via the VPN.
>
> All the suggestions I've seen are to disable IPv6 while using a VPN.
> This would be easy if you use a script to start the VPN.  Or you could
> run a script prior to connecting using NetworkManager.  The script would
> simply....
>
> echo "1" > /proc/sys/net/ipv6/conf/(interface name)/disable_ipv6   for
> each interface on the system.
>
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