VPN, IPv4 and leak over IPv6



Dear NetworkManager folks,


With NetworkManager 1.6.2 and the NetworkManager Applet 1.4.6 from
Debian Sid/unstable, I set up an VPN connection with the OpenVPN plugin
to the VPN server SoftEther [1].

The VPN server is configured in a way, that it only assigns an IPv4
address and no IPv6. But from the router the system gets an IPv4 *and*
IPv6 address.

Now it looks like, that the browser prefers using the IPv6 connection,
and therefore I browse *outside* the VPN on Web sites supporting IPv6.

Is that the expected behavior, or can NetworkManager do something about
it, that it deactivates the IPv6 connection, when the VPN connection
only “supports” IPv4?


Thanks,

Paul


[1] https://github.com/SoftEtherVPN/SoftEtherVPN/

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