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== Requirements
* Magisk; link:https://github.com/ghost-420/Ez_Magisk[installing Magisk (via recovery)]
* link:https://github.com/Magisk-Modules-Repo/MagiskHidePropsConf#installation[MagiskHide Props Config] module installed
* The link:https://f-droid.org/en/packages/com.termux/[Termux] terminal emulator (link:https://wiki.termux.com/wiki/Termux_Google_Play[from F-Droid only])
* link:https://f-droid.org/en/packages/dev.ukanth.ufirewall/[AFWall+ from F-Droid]

* Install Busybox Magisk module
. Magisk -> Modules (puzzle piece icon)
. Search for 'busybox' to find "Busybox for Android NDK", then install it

== Recommended/optional
* link:https://play.google.com/store/apps/details?id=com.draco.ktweak[KTweak for higher network speeds], using its 'throughput' profile.
* Kernel with the "xt_HL.ko" module (netfilter's TTL packet mangling) enabled
** Known kernels with support:
*** kdrag0n's link:https://github.com/kdrag0n/proton_kernel_redbull[ProtonKernel] for Pixel 4a 5G/Pixel 5

NOTE: Testing "xt_HL.ko" support: +
1. Launch Termux +
2. ``su`` +
3. ``iptables -t mangle -A POSTROUTING -o wlan+ -j TTL --ttl-set 64;ip6tables -t mangle -A POSTROUTING -o wlan+ -j HL --hl-set 64``

TIP: -> If your custom kernel does not support `--ttl-set` and `--hl-set`, inform them of this repository publicly (to increase exposure of these instructions). +
 For kernel tweakers: link:https://web.archive.org/web/20210423030541/https://forum.xda-developers.com/t/magisk-stock-bypass-tether-restrictions.4262265/[A reference for enabling "xt_HL.ko" support through Magisk].

== 1. Configure props
NOTE: ↵ is the kbd:[Enter / Return] key.

. Launch Termux.
. ``su``
. ``settings delete system tether_entitlement_check_state;settings delete global tether_dun_required``
. ``props``
** "Select an option below." -> "Add/edit custom props" kbd:[4 ↵]
** Select "New custom prop" with kbd:[n ↵]
*** `net.tethering.noprovisioning` kbd:[↵] -> kbd:[true ↵] -> kbd:[y ↵]
**** "Do you want to reboot now?" kbd:[n ↵]
** Select "New custom prop" with kbd:[n ↵]
*** `tether_entitlement_check_state` kbd:[↵] -> kbd:[0 ↵] -> kbd:[y ↵]
**** "Do you want to reboot now?" kbd:[n ↵]
** Select "New custom prop" with kbd:[n ↵]
*** `tether_dun_required` kbd:[↵] -> kbd:[0 ↵] -> kbd:[y ↵]
**** "Do you want to reboot now?" -> kbd:[y ↵]

== 2. Adjust TTL & HL

.Alternative method for kernels with no "xt_HL.ko" support
[%collapsible]
====

. Download link:https://play.google.com/store/apps/details?id=org.segin.ttleditor[TTL Editor] from the Google Play Store, which can be downloaded through link:https://gitlab.com/AuroraOSS/AuroraStore/-/releases[Aurora Store].
. Open TTL Editor
. Check "Apply to all network interfaces using /proc"
. Press OK to the side of "Set new TTL" to apply a chosen TTL

NOTE: This has to be manually applied on every boot (when you wish to tether)

___
====

. Open AFWall+ -> 3 vertical dots (hamburger menu) -> Preferences
- UI Preferences
** Confirm AFWall+ disable -> Enabled
- Binaries
** Iptables binary -> System iptables
** BusyBox binary -> System BusyBox
. Open AFWall+ -> 3 vertical dots (hamburger menu) -> Set custom script
. Put in "Enter custom script below"

////
Blanket setting \*rmnet* might be a bad idea? +
rndis* is specific to USB tethering; \*rmnet* still has business with USB tethering, along with all other tether types.
////
[source]
----
iptables -t mangle -A POSTROUTING -o +rmnet+ -j TTL --ttl-set 64
iptables -t mangle -A POSTROUTING -o rndis+ -j TTL --ttl-set 64
ip6tables -t mangle -A POSTROUTING -o +rmnet+ -j HL --hl-set 64
ip6tables -t mangle -A POSTROUTING -o rndis+ -j HL --hl-set 64
----

== 3. Test TTL & HL change on the tethered device
NOTE: kbd:[CTRL C] to stop pinging at any time

* IPv4/iptables: `ping -4 gnu.org`
* IPv6/ip6tables: `ping -6 gnu.org`

If the TTL & HL is 64, you've successfully completed this guide.

TIP: If this works, then Star this repository!