[tor-bugs] #30134 [Applications/Orbot]: reEnable IPv6 routing by Orbot add back Route to handle IPv6

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#30134: reEnable IPv6 routing by Orbot add back Route to handle IPv6
-------------------------+------------------------------------
 Reporter:  cypherpunks  |          Owner:  n8fr8
     Type:  defect       |         Status:  new
 Priority:  High         |      Component:  Applications/Orbot
  Version:               |       Severity:  Minor
 Keywords:  Orbot IPv6   |  Actual Points:
Parent ID:               |         Points:
 Reviewer:               |        Sponsor:
-------------------------+------------------------------------
 I wondered why Orbot does not use IPv6 routing but Tor Browser access IPv6
 sites fine, while both android and badvpn support it very well.

 After looking into code i found the line at:

 https://github.com/n8fr8/orbot/blob/56917567cd21a734a35f3bee0e56ba23793b6887/orbotservice/src/main/java/org/torproject/android/service/vpn/OrbotVpnManager.java#L327

  commented out :( :
 {{{
                                 //handle ipv6
                                 //builder.addAddress("fdfe:dcba:9876::1",
 126);
                                         //builder.addRoute("::", 0);
 }}}

 Tor Browser speaks directly to socks5 of tor with IPv6 and not over
 tun2socks vpn translation. That's why you can actually access IPv6
 Websites but not for tunneling any other application connection to IPv6.

 tun2socks just requires argument:


 {{{
 --netif-ip6addr fdfe:dcba:9876::2
 }}}

 if
 {{{
 fdfe:dcba:9876::1
 }}}
  will be address of virtual interface

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30134>
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