Hi Martin,
I've been using a local dnsmasq instance on my VPN client which has
some advantages:
(1) you can configure specific forwarders for particular domains
(e.g. for local domains that are reachable only via a tunnel
or resolving the VPN endpoint name always via your ISP's server)
(2) you can control its behavior using dbus (e.g. add/change
the default/specific forwarder)
HTH,
Mathias.
Martin Lund wrote:
> Hello All,
>
> I was thinking on how to solve this problem because starts to get annoying. I
> have my linux machine connecting through openvpn with a script.
>
> After connecting my script replaces the dns servers in /etc/resolv.conf with
> OpenDNS so all the DNS requests will be forwarded through the VPN tunnel.
>
> The only problem is that if the VPN tunnel dies and it tries to re-resolve
> the address it can't because those DNS requests will be sent through the
> tunnel as well.
>
> Is there a solution for this?
>
> I know that there are multiple entries possible in /etc/resolv.conf so for
> example I could put:
>
> nameserver <opendns>
> nameserver <localdns>
>
> in there expecting that the secondary DNS will only be used if the name
> resolution fails on the first one but my experience is that when the first
> fails, linux just don't switch over to the second one and my concern is that
> if I insist on having all the DNS requests go through the tunnel then even if
> the first NS works there can be some requests sent to the second one.
>
> I think that would be good if it would be possible to tell openvpn that try
> to resolve the vpn server's domain through given local nameserver (no matter
> what) or through 8.8.8.8.
>
> Thanks!
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