On 29 Apr 2017, at 01:43, Anders Andersson pipatron@gmail.com wrote:

I plan to set up a Tor exit node (again), and the server has two external interfaces each with a dedicated IP. I'm going to use one of these exclusively for Tor.

I also run a validating Unbound on the same machine, and all DNS lookups that are not cached will go out on the *other* interface by default.

internet <--> IP 1 <--> unbound internet <--> IP 2 <--> tor, talking locally to unbound

IP 1 and 2 should have the same routing path otherwise, because it's on the same network.

I can't imagine how this could be problematic, but there has been so much talk about DNS lookups over the years, so I thought I'd better check with people who know more about this.

I have a similar setup on my Exit, and it works well. (There's also no reason why it shouldn't work.)

Just checking that you're using 127.0.0.1 or ::1 for tor to talk to unbound? It might not be a good idea to allow others to use your resolver, because they can check which sites are being looked up from the response time.

Also, you might want to read the tor man page entries for these options:

The IP addresses your relay will advertise (tell others to connect on): Address (IPv4) ORPort (IPv6)

The IP addresses your relay will listen on: ORPort DirPort

The IP addresses your relay will make outbound connections on: OutboundBindAddressOR OutboundBindAddressExit

T -- Tim Wilson-Brown (teor)

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