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I'm trying to setup a Tor transparent proxy VM to work over IPv6. The Tor manual states that for the VirtualAddrNetworkIPv6 setting:

When providing proxy server service to a network of computers using a tool like dns-proxy-tor, change the IPv4 network to "10.192.0.0/10" or "172.16.0.0/12" and change the IPv6 network to "[FC00]/7".

https://www.torproject.org/docs/tor-manual.html.en

My torrc file is configured like this:

VirtualAddrNetwork 10.192.0.0/10 VirtualAddrNetworkIPv6 [FC00]/7

However when I try to start Tor I get this error:

[warn] Malformed IP "FC00" in address pattern; rejecting. [warn] Failed to parse/validate config: Error parsing VirtualAddressNetworkIPv6 [FC00]/7 [err] Reading config failed--see warnings above.
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  • update: #19743 is fixed in the 0.2.9.2-alpha release, see the patch notes Commented Sep 12, 2016 at 6:30

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Looks like a documentation error.

This should be raised as a ticket on the Tor Project Bug Tracker. There are details on the front page for an anonymous login, if required.

I think that it should be of the format:

VirtualAddrNetworkIPv6 [FC00::]/7

The default value, defined in the manual page is specified, in that format, as: [FE80::]/10

 VirtualAddrNetworkIPv6 [Address]/bits When Tor needs to assign a virtual (unused) address because of a MAPADDRESS command from the controller or the AutomapHostsOnResolve feature, Tor picks an unassigned address from this range. (Defaults: 127.192.0.0/10 and [FE80::]/10 respectively.)

Update: I've created a ticket for this so that it's documented on the official bug tracker: #19743 (VirtualAddrNetworkIPv6 manpage entry correction)

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  • Yep, that did it. It starts now. Commented Jul 23, 2016 at 2:10

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