[tor-bugs] #18109 [Orbot]: Orbot with Transparent Proxying breaks Hotspot DHCP

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#18109: Orbot with Transparent Proxying breaks Hotspot DHCP
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     Reporter:  cyphar  |      Owner:  n8fr8
         Type:  defect  |     Status:  new
     Priority:  Medium  |  Milestone:
    Component:  Orbot   |    Version:  Tor: 0.2.7.5
     Severity:  Major   |   Keywords:  orbot android dhcp hotspot
Actual Points:          |  Parent ID:
       Points:          |    Sponsor:
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 I'm using the current version of Orbot (15.1.0-RC-2) and CyanogenMod 12.1.

 If you enable transparent proxying of all apps ("tor everything"), along
 with enabling a WiFi hotspot from your phone, any clients attempting to
 connect to your phone's hotspot will be unable to get a DHCP lease. It
 seems it might be involved with the iptables rules that Orbot sets up.

 Enabling the option "Tor tethering" doesn't appear to make a difference
 either. Connecting to the network and then enabling Orbot will cause DNS
 to stop working.

 This means that I cannot effectively both have all of my apps Tor-ified on
 my phone and also have a wifi-hotspot open for my laptop (even if I'm not
 trying to tor-ify my laptop's internet).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18109>
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