On 18.04.2017 21:37, Selva Nair wrote:
>
> On Sat, Apr 15, 2017 at 6:41 PM, ValdikSS <valdi...@gmail.com
> <mailto:valdi...@gmail.com>> wrote:
>
> How does this registry entry tell Windows that TAP adapter should be
> preferred for DNS? Or is this to be done in addition to setting up a
> preferred ordering of network adapters?
It doesn't. I just remembered that option and set it. It worked for me when DNS
is in the same subnet with user, but it fails if DNS is in the internet.
Setting lower metric to the TAP interface correctly works in both cases,
without reg patch.
>
> Can WFP be used to rewrite the source address? In that case we could just
> redirect all DNS requests through the TAP interface instead of dropping
> packets.
Unfortunately not, not without kernel driver.
> As for local ipv6 DNS servers, I do not think we should do anything about it
> unless the tunnel can handle v6 traffic.
>
> Selva
I made a perliminary patch to set interface metric to 7:
https://github.com/ValdikSS/openvpn-with-patches/commit/0651c0469038dd0ba39329f4b83ecd7e1d04323e
This is static change for the interface. Currently this patch does not revert
previous metric value if there were any or set it back to automatic. Should it
be implemented in your opinion? It still won't revert this value back in case
of OpenVPN crash or power outage. Yet I don't think that lower metric on TAP
interface would have any influence for networking at all.
Please tell your opinion guys. Selva said it should revert the previous value
upon termination.
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