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Re: [tor-bugs] #22429 [Applications/Tor Browser]: bridge: Add Lisbeth IPv6 address



#22429: bridge: Add Lisbeth IPv6 address
-----------------------------------------------+--------------------------
 Reporter:  dgoulet                            |          Owner:  tbb-team
     Type:  enhancement                        |         Status:  closed
 Priority:  Medium                             |      Milestone:
Component:  Applications/Tor Browser           |        Version:
 Severity:  Normal                             |     Resolution:  fixed
 Keywords:  tbb-bridges TorBrowserTeam201706R  |  Actual Points:
Parent ID:                                     |         Points:
 Reviewer:                                     |        Sponsor:
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Comment (by dcf):

 Replying to [comment:4 gk]:
 > Replying to [comment:3 dcf]:
 > > Here is a patch. I tested the bridge line by itself in a torrc file,
 but I wasn't able to test it in Tor Browser on an IPv6-capable system.
 > >
 > > When Tor Browser tries to use the bridge line on an IPv4-only system,
 this is what appears in the log:
 > > {{{
 > > 06/01/2017 13:06:18.700 [NOTICE] DisableNetwork is set. Tor will not
 make or accept non-control network connections. Shutting down all existing
 connections.
 > > 06/01/2017 13:06:18.700 [NOTICE] Opening Socks listener on
 127.0.0.1:9150
 > > 06/01/2017 13:06:20.600 [NOTICE] Bootstrapped 5%: Connecting to
 directory server
 > > 06/01/2017 13:06:20.600 [NOTICE] Bootstrapped 10%: Finishing handshake
 with directory server
 > > 06/01/2017 13:06:20.600 [WARN] Proxy Client: unable to connect to
 2001:470:b381:bfff:216:3eff:fe23:d6c3:443 ("general SOCKS server failure")
 > > 06/01/2017 13:06:25.400 [NOTICE] Closing no-longer-configured Socks
 listener on 127.0.0.1:9150
 > > 06/01/2017 13:06:25.400 [NOTICE] DisableNetwork is set. Tor will not
 make or accept non-control network connections. Shutting down all existing
 connections.
 > > 06/01/2017 13:06:25.400 [NOTICE] Closing old Socks listener on
 127.0.0.1:9150
 > > }}}
 >
 > Hrm. That's not good. I assume Tor Browser is randomly choosing one
 bridge the next time it starts (again) but we should be smarter here than
 making the user believe Tor Browser is broken. dcf: Do you know whether
 there is already a ticket anywhere for this issue?

 When I did my test, I commented out all bridges except for the IPv6 one.
 I'm guessing it would have worked (with only a warning in the log) if I
 had left the others uncommented.

 I don't know exactly how it works, but Tor Browser seems to choose more
 than one bridge. For example, in my browser right now, the log mentions
 GreenBelt, Azadi, MaBishomarim, cymrubridge31, Lisbeth, noether,
 cymrubridge33, NX01, ndnop5.

 In the past, we had a separate `fte-ipv6` option where the IPv6 addresses
 were kept. Those IPv6 bridges were removed in #18976.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22429#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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