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Before going into main question, we do know that :

Now the question is :

"Is there a way to share the reverse-tethered internet (as we known connected via usb0 interface) via "Android WiFi Hotspot?"

To make it easier, here's the schema:

schema
Schema of my setup (click image for larger variant)

*Additional Notes :

  • Actually I don't give a limit which version of the Android (so if it's just compatible in higher version e.g. 4.2, it's okay for me), but I prefer it works on 2.3.x (Gingerbread)

  • Some explanations of how to make APN (Infrastructure Mode) on Android (just like Wireless Router/[netsh wlan hostednetwork] on Windows 7/8) might be really helpful too.

  • And also some explanations about how to masquerade (internet sharing) between two interfaces in Android. (such as ICS in Windows or Masquerade/iptables thingy in Linux-based)
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  • possible duplicate of How to set up reverse tethering over USB? Commented Aug 14, 2013 at 8:38
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    @t0mm13b No. The OP doesn't want to know how to set up reverse tether, but how to share that connection to other devices. Commented Aug 14, 2013 at 8:49
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    yeah, that's quite different that just reverse tether.. it's more advanced which, after you tether, you do "masquerade" sharing from usb0 into wlan0 and broadcast that as wifi hotspot. i understand that mistake that pretty "similar". please let LO this one. thanks in advance. Commented Aug 14, 2013 at 9:37
  • Btw: You might wish to take a look at Can we use an Android phone as a Wi-Fi repeater? and see how it applies to your case. Don't forget to let us know here then :) Commented Aug 18, 2013 at 18:36

2 Answers 2

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I managed to make it work. Here is an "OSI-like" diagram of my setup, if it makes sense:

 ____________________ ______________________________ ____________ | LinuxVM <----+ | | | | | | VirtualBox | | | | | | | Windows7(host) | | | +--> AndroidPhone <-------+ | | +-->Laptop | | (USB) +-------+ (USB) (wifi-HotSpot) +-------+ (wifi) | |___________________| |______________________________| |____________|

The script is located at the XDA forum: http://forum.xda-developers.com/showpost.php?p=50236807&postcount=9

## 0.a. Connect android-phone to PC through USB. ## 0.b Enable Settings|...|Tethering ## (so that the device gets detected by the PC's kernel, you should see the following with 'dmsg': ## [ 3.976599] rndis_host 1-1:1.0 usb0: register 'rndis_host' at usb-0000:00:0b.0-1, RNDIS device, 4e:d5:8c:7b:4f:5a ## Enable Settings|...|Wifi-Hotspot ## Setup usb reverse-tethering. # from: http://forum.xda-developers.com/show....php?t=2287494 # # Yours device might be 'rndis0' or something else. Check by just typing 'netcfg'. # netcfg usb0 dhcp busybox route add default gw 10.42.0.1 dev usb0 ## Disable mobile-data. # busybox ifconfig rmnet_usb0 0.0.0.0 ## Masquerade through USB. # echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -F iptables -t nat -A POSTROUTING -o usb0 -j MASQUERADE iptables -P FORWARD ACCEPT ## Set DNS (if neccessary, ie google's 8.8.4.4). # setprop net.dns1 XX.YY.ZZ.WW
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  • man.. the wait is over. this is the godlike answer XD Thanks a lot :) Commented May 24, 2014 at 6:17
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    Excuse me, would you please tell me where to write and execute this script to allow wifi tethering while reverse tethering from usb? And please, is it a one way process or is it temporal? Commented Oct 21, 2014 at 23:14
  • 1. it's temporal. it breaks if any of interface down (offline) or restarted. 2. write this script via text editor and save it as <filename>.sh, execute it via terminal (emulator). Commented Sep 20, 2015 at 13:21
  • I able to access PC internet in android mobile using "AndroidTool.exe" tool now can anyone tell me what is next step to share the internet using wifi-HotSpot to other devices. above command tried still no success. Commented Apr 26, 2016 at 9:23
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I made a tool special for that use case: tetherspot

This script simplifies reverse USB tethering with WiFi hotspot on non-rooted Android devices

The main idea is to use

  • Gnirehtet on PC to start reverse USB tethering via VPN and adb
  • Proxy server on Android to route WiFi hotspot traffic to VPN
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