Question Connectivity check on Android 10 - Samsung Galaxy A12

How can be connectivity check adjusted / disabled for A12?
My phone reports "connected without internet" due to firewall setup.
On my other devices it was possible to disable the connectivity check using these steps: https://github.com/ukanth/afwall/issues/761
It doesn't work for Samsung Galaxy A12 with Android 10.
It wouldn't bother me since actually all aps and services which matter can access everything what is needed but since Android thinks there is no internet, it stops synchronisation with my Radicale server (used instead of google services).
Update 19.4.2021:
Check is handled by UID 1000. Now it needs port 443 to be opened. Packing the connectivity check nontransparently together with so many other services within single encrypted channel doesn't help to build bonds of trust between user and vendor to say the least.

fixapixa said:
How can be connectivity check adjusted / disabled for A12?
My phone reports "connected without internet" due to firewall setup.
On my other devices it was possible to disable the connectivity check using these steps: https://github.com/ukanth/afwall/issues/761
It doesn't work for Samsung Galaxy A12 with Android 10.
It wouldn't bother me since actually all aps and services which matter can access everything what is needed but since Android thinks there is no internet, it stops synchronisation with my Radicale server (used instead of google services).
Update 19.4.2021:
Check is handled by UID 1000. Now it needs port 443 to be opened. Packing the connectivity check nontransparently together with so many other services within single encrypted channel doesn't help to build bonds of trust between user and vendor to say the least.
Click to expand...
Click to collapse
Maybe I'm seeing but this should be handled in afwall. You can whitelist the needed port by using a script:
Essentially you just put this in a custom script (inside AFWall): $IPTABLES -A "afwall" -p udp --dport 53 -j ACCEPT
Hope it helps.

It_ler said:
Maybe I'm seeing but this should be handled in afwall. You can whitelist the needed port by using a script:
Essentially you just put this in a custom script (inside AFWall): $IPTABLES -A "afwall" -p udp --dport 53 -j ACCEPT
Hope it helps.
Click to expand...
Click to collapse
Well, port 53 is not enough any more. Port 443 can pack too many other unrelated services so it would be handy to have a way to disable connectivity check altogether.

Related

[Q] at commands

Does any one have a list of AT Terminal commands for the Captivate? that would be just swell
I asked for them on the Samsung website and they thought it was a feature I wanted added to the phone, they had no clue
I have looked on a lot of forms for other phones and over 1/2 the commands don't work on the Captivate :'(
I was looking on some general AT forms and found two different commands to connect the phone to the network but they returned with errors, I tried to post the AT commands here but since I'm new it will not let me post them because it thinks they are links.
I'm confused, are you talking about AT modem stuff like AT&F&C1&D2?
ivioo said:
Does any one have a list of AT Terminal commands for the Captivate? that would be just swell
Click to expand...
Click to collapse
Not quite sure what you are talking about. The only phones I have seen w/ AT commands are Motorola's, using RSD and F&B3 etc. Are you talking about those??
They are probably asking about the AT command set for the 3G modem in the captivate for use for tethering.
This is what I had been using for tethering on my N95 with AT&T medianet. (/etc/ppp/ppp.conf on freebsd -- this will be somewhat different in Linux land) I have not tried the same commands with the captivate yet to see if they work. This at least lists the AT commands. Of course, '\' is line continuation.
Code:
medianet:
set device /dev/cuaU0
set phone "*99***1#"
set authname "[email protected]"
set authkey "CINGULAR1"
set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \
\"\" AT OK-AT-OK ATQ0V1E1S0=0&C1&D2+FCLASS=0 OK \
AT+CGDCONT=1,\\\"IP\\\",\\\"wap.cingular\\\" OK \
AT+COPS? OK \
\\dATDT\\T TIMEOUT 40 CONNECT"
add default HISADDR
set ifaddr 10.0.0.1/0 10.0.0.2/0 255.255.255.0 0.0.0.0
EDIT: Just tested it on the captivate, connects to medianet just fine. Yay for tethering on JH7
othermark said:
They are probably asking about the AT command set for the 3G modem in the captivate for use for tethering.
This is what I had been using for tethering on my N95 with AT&T medianet. (/etc/ppp/ppp.conf on freebsd -- this will be somewhat different in Linux land) I have not tried the same commands with the captivate yet to see if they work. This at least lists the AT commands. Of course, '\' is line continuation.
Code:
medianet:
set device /dev/cuaU0
set phone "*99***1#"
set authname "[email protected]"
set authkey "CINGULAR1"
set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \
\"\" AT OK-AT-OK ATQ0V1E1S0=0&C1&D2+FCLASS=0 OK \
AT+CGDCONT=1,\\\"IP\\\",\\\"wap.cingular\\\" OK \
AT+COPS? OK \
\\dATDT\\T TIMEOUT 40 CONNECT"
add default HISADDR
set ifaddr 10.0.0.1/0 10.0.0.2/0 255.255.255.0 0.0.0.0
EDIT: Just tested it on the captivate, connects to medianet just fine. Yay for tethering on JH7
Click to expand...
Click to collapse
Sorry for the late reply
Yes I'm looking for the AT command set for the 3G modem in the captivate. I'm trying to use the program "Tera Term VT" on windows 7 computer (for some reason Microsoft decided to not include Hyper Terminal with the win 7 OS) and I'm kind of new to the whole commands for the terminal.
I can get the commands that start with "AT" to be recognized with the terminal but I don't know what to do with the "set" and "\" commands since I'm not using freebsd.
What I posted is the ppp.conf configuration segment for the userspace ppp program on FreeBSD.
The 'set' commands setup the configuration for ppp to talk to the modem and establish the ppp channel, even the 'set dial' segment (which you're interested in) has a special format/meaning to ppp.
A line by line explanation can be found here.
To make it even less understandable, the 'dial' string is in the chat format. Lol. Seriously not for the feint of heart technical reading, however this is what we had to deal with in the old days to get internet access...
Basically what you're seeing in the dial string is a string to send and then a expected response. There is a prelude of strings that the modem may generate, as well as how long to wait at the end. All the
Code:
'\\\'
strings are escapes and certain strings like
Code:
'\d' '\T'
have special meaning in the chat syntax.

[DEV] 3G Dongles - Huawei/ZTE GSM & CDMA

Hi Folks
[UPDATE]This is not the only way of getting Dongle's working on the N7, If widgets are your thing and you don't feel confident working with system files etc then you may be better served using the ppp widget form draisberghof.de, these are the folks who piratically wrote the book on getting dongles working on linux and by extension android and members have reported success using it. See this thread [Nexus7 UMTS-Stick extern working] in the general section for the initial find.
[UPDATE]This mod has seen success on ZTE Dongles ( Thanks To NexusPhreak ) See the supported devices list in the second post for a list of the latest tested devices
[UPDATE]It turns out this mod is good for CDMA Dongles as well as GSM - It needs a slight tweak. See this post [ Post #76 ] for details ( Thanks to mailbinoy )[UPDATE]
IMPORTANT: THIS IS A WIP AND NOT READY FOR PRIME TIME - IF YOU HAVE NEVER USED FASTBOOT, ADB, DON'T UNDERSTAND THE FIRST THING ABOUT NETWORKING OR HAVE NEVER SEEN A BASH PROMPT THEN THIS IS PROBABLY NOT FOR YOU
TROUBLESHOOTING: IF YOU ARE HAVING PROBLEMS PLEASE READ THE TROUBLESHOOTING SECTION IN THE SECOND POST - THE MORE INFORMATION YOU CAN PROVIDE THE BETTER AS THIS HELPS GET TO THE ROOT OF THE PROBLEM - THIS INCLUDES MODEL NUMBER OF THE DONGLE, LOGCAT LOGS AND DMESG OUTPUT.
DOUBLY IMPORTANT: PLEASE READ THE FIRST AND SECOND POST TO GET AN UNDERSTANDING OF WHAT WORK HAS BEEN DONE AND HOW THIS FUNCTIONALITY IS IMPLEMENTED
Okay I've seen a lot a thread asking whether using 3G Dongles ( Huawei in particular ) is possible with the nexus 7........ The Answer........ "Of course it is!!!11!! it's Android/Linux Kernel, If we can dream it we can code it! "
I've been working on getting the full connectivity going but so far I've managed to bring up a raw ppp connection which is good for all things google (play, web browsing, gmail ) as the google apps still aren't playing fair with the connectivity manager and they just scoot around that and use web sockets instead!
Normally to enable this functionality we need to compile the usb_wwan.ko and option.ko as kernel module, much to my surprise google/asus have built these in already so we can just usb_modeswitch into modem mode and init our ppp connection. Winner! :good:
STAGE 1 PPP Connections
My test modems where Huawei E173s-1 and E1752Cu and the build I used is my own AOSP 4.1.1 with a kernel version of 3.1.10-g52027f9
Steps to 3G Fun
1. Do a full back up
2. Flash this boot.img through fastboot
3. Download This file ( nexus7-3g.7z ) See post 2 for link
4. unzip the file and adb push to correct directories
5. Turn off Wifi
6. Plug in Dongle
7. Restart
8. In Terminal Emulator of similar run
Code:
su
/system/etc/init_pppd_gprs
If all has worked then your dongle should now be connected!
Detailed Explanation ( Or Why The Hell Am I Doing This? ):
Why The New Boot.img?
The boot image adds service called hotplugd and service called switch_ms_to_3g which handles the usb_modeswitching
The code for hotplugd is here ( github ). if you don't want to flash the new boot image you can always run usb_modeswitch manually pointing to the config file and specifying your vendor id and product id if you do not wish to run hotplugd
Why turn Wifi Off?
We turn wifi off first because otherwise the ppp connection doesn't get assigned properly if wifi is turned off after the event.
Why The Restart?
On My USB OTG cable at least it doesn't seem to get power if I plug it in after power up YMMV.
STAGE 2 - FULL CONNECTIVITY
Obviously the Stage 1 is good. But It's not Great and we can do better. Using a similiar Wifi Only Device as my frame of reference, ( the Motorola Xoom Wifi ) to bring full connectivity ( i.e Mobile Networks Option in the settings and The Signal Icon in the Menu Bar) to the device required modification of the framework-res to allow mobile networks, you can either modify the existing one on the device or if building from source you can modify the config.xml found in the device overlay in the aosp ( device/asus/grouper/overlay/frameworks/base/core/res/res/values/config.xml )
something along the lines of
Code:
<resources>
<string-array translatable="false" name="networkAttributes">
<item>"wifi,1,1,0,-1,true"</item>
<item>"mobile,0,0,1,-1,true"</item>
<item>"mobile_mms,2,0,2,60000,true"</item>
<item>"mobile_supl,3,0,2,60000,true"</item>
<item>"mobile_dun,4,0,5,60000,true"</item>
<item>"mobile_hipri,5,0,3,60000,true"</item>
<item>"bluetooth,7,7,0,-1,true"</item>
<item>"ethernet,9,9,9,-1,true"</item>
<item>"mobile_fota,10,0,2,60000,true"</item>
<item>"mobile_ims,11,0,2,-1,true"</item>
<item>"mobile_cbs,12,0,2,60000,true"</item>
<item>"wifi_p2p,13,1,0,-1,true"</item>
</string-array>
<string-array translatable="false" name="radioAttributes">
<item>"9,1"</item>
<item>"1,1"</item>
<item>"0,1"</item>
<item>"7,1"</item>
</string-array>
</resources>
NOTE: I've not really took the time to fully understand these settings and I've basically Kang'd them from another overlay.
As such they maybe suboptimal. Any further tweaks Improvements or general insight is more than welcome.
This seems to build okay and gives me the above mentioned features,I also set the build.prop default network to
GSM:
Code:
ro.telephony.default_network=3
CDMA:
Code:
ro.telephony.default_network=4
NOTE: Full CDMA Support require more than just this. There are a number of other build properties which affected and I'm currently working out which are the best ones to use.
and added the following files
Code:
/system/bin/rild
/system/lib/libhuaweigeneric-ril.so
/system/etc/permissions/android.hardware.telephony.gsm.xml
/system/etc/permissions/android.hardware.telephony.cdma.xml
I would expect this work and give me full connectivity on the device however it seems to "bork" when trying to load the vendor specific ril , I suspect I may be missing a permission or something similar
PROBLEMS - TROUBLE SHOOTING
If you're having problems, first I would Install busybox which will give you lsusb, this will tell you if your modem is actually recognized.
You can also run netcfg which will tell you if the network interface name ppp1 has been created and is up, then grab dmesg and a logcat, so something like this on adb will give you a good idea of what's going on.
Code:
adb shell netcfg
adb shell lsusb
adb shell dmesg
adb logcat -b main -b system -b events -b radio
* Note if you are running logcat through terminal emulator please run it with superuser permissions
Code:
su -c "logcat -b main -b system -b events -b radio"
Happy Hacking People and Good Luck!
References:
DerArtem Original Work with Huawei Dongles on the Toshiba Folio 100
usb_modeswitch official website
3g-modem.wetpaint.com A great source of information regarding 3G Dongles
Android Device Porting Walkthrough - Android Builder Summit 2012 ( An excellent presentation on device porting )
Hi Folks.
[DISCLAIMER]YOU KNOW THE DRILL.... RESPONSIBILITY FOR DAMAGE, INCURRED COST THROUGH EXCESSIVE DATA USAGE ETC IS NOTHING TO DO WITH ME.[DISCLAIMER]
VITAL : THIS IS STILL A WIP - THERE IS A GOOD CHANCE THAT I'VE DONE SOMETHING WRONG, COPIED A FILE TO THE WRONG DIRECTORY OR SIMPLY MISSED SOMETHING OUT, PLEASE THINK ABOUT WHAT YOU ARE DOING BEFORE BLINDLY FOLLOWING THE INSTRUCTIONS OF SOME MANIAC ON THE INTERNET :laugh:
Right on with the fun!
I haven't had much time to look at this as it wasn't top of my list, However the good news is I now have full 3g connectivity on the nexus 7 using Huawei 3G Dongles. :victory:
The issue turned out to be incorrect permissions on the /dev/ttyUSB* devices nodes which are created by the Huawei Modems, this was fixed by adding the following line to uevent.grouper.rc in the boot.img,
Code:
/dev/ttyUSB* 0660 root radio
simple when you know how!
I've attached a zip file which contains the files needed to enable this. It is a manual installation at present although I plan to make this flashable through recovery at some point but would really like to leave any other modification you may have made in tact. I.e TabletUI etc
The Changes where made to the Stock Factory Image JRO03D with Kernel 3.1.10-g52027f9
I've included the stock Mms app and enabled both voice and sms capability in the framework-res.apk. I left out the Phone.apk as you can only make silent calls because of the lack of Audio Rooting ( A possible future project perhaps ). I also changed the Data Usage to monitor the connection used by the dongle which allows you to impose data limits on your bandwidth ( see screenshots ).
Upon applying this update you should have mobile networks available in "settings/more networks" and the signal strength icon should appear in your status bar
Download the file here ( hotfile )
Please follow the readme in the archive for installation instructions and take note of the notes!
In addition to the steps in the readme, It's worth making sure that everything that needs to be executable still is.
Code:
adb shell chmod 6755 /system/bin/pppd
adb shell chmod 755 /system/xbin/chat
adb shell chmod 755 /system/bin/usb_modeswitch
adb shell chmod 755 /system/bin/rild
adb shell chmod 755 /system/bin/hotplugd
adb shell chmod 755 /system/etc/ppp/init_pppd_gprs
adb shell chmod 755 /system/etc/ppp/ip-up-gprs
adb shell chmod 755 /system/etc/ppp/ip-down-gprs
SUPPORTED DEVICES
The theoretical list of supported devices come from those Huawei devices which are supported by the GSM Modem driver in 3.1.10 kernel.
my testing was on a E1752Cu, E173s-1 and the E1750
Confirmed Devices
Huawei
E1750
E1752Cu
E173s-1
E173-u2 ( Thanks to m3ritum ) Video
E367 ( Thanks to mynamesriz )
E3131s-2 GSM/HSPA+ ( Thanks to radkor )
EC156 CDMA with a couple of tweaks see this post [ Post #76 ] ( Thanks to mailbinoy )
E160E (Thanks to Dragon0501 )
ZTE
MF190J**
MF190**
MF636**
MF626**
** Thanks To NexusPhreak
TROUBLESHOOTING
There are 2 main ways your connection attempt can fail.
1. The UsbStick has not switched to modem mode
2. The ppp connection script failed
Either Way it would be highly useful post the list of system properties, outputs of dmesg and also a full logcat aswell as the vendor/product id from lsusb,
some like this throught the adb
Code:
adb shell getprop
adb shell lsusb
adb shell dmesg
adb logcat -b radio -b system -b main -b events
* Note if you are running logcat through terminal emulator please run it with superuser permissions
Code:
su -c "logcat -b main -b system -b events -b radio"
RESERVED
All sounds very cool, nice one.
looks very promising, do you know if there are any CDMA dongles for 4G phones on Verizon?
Is there a better explanation of how this works ? Would we have to have a data plan to use this or is it just picking up 3g?
Sent from my Nexus 7 using Tapatalk 2
azoller1 said:
looks very promising, do you know if there are any CDMA dongles for 4G phones on Verizon?
Click to expand...
Click to collapse
Not a clue, I'm not in the US and don't really have an understanding of the US celluar network. I'm unsure whether this implementation of the ril library ( the part that talks to android ) can handle CDMA as I've only got GSM dongles to test with.
emarietta said:
Is there a better explanation of how this works ? Would we have to have a data plan to use this or is it just picking up 3g?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Hi
This is using Huawei 3G Dongles ( sometime called mobile broadband ) which were quite popular in the UK and Europe, Something along the lines of this ( linked picked at random ) they normally come with their own sim card, and by extension a data plan, generally on a pay-and-go basis.They are effectively a fast "dialup modem" ( by UK Standards anyway )
The modems are generally carrier branded / locked and are restricted to data and sms only. However the carrier restriction can be removed and voice support can be added via firmware updates if the hardware allows.
My carrier ( 3-UK ), picked this up as tethering when I used my Phone SimCard for testing and as such It is not a method around tethering restrictions your operator may have in place.
I hope the helps shed some light on the topic.
cool idea, ill just use my 4g tether though
Great work mate!!! Just one question:
I will be getting my Nexus 7 in a couple of days and I already own a HP TouchPad running CM9. I want to know can I tether my dongle's internet on my nexus 7 with the HP Touchpad via Wifi or bluetooth?
lovleshgarg said:
Great work mate!!! Just one question:
I will be getting my Nexus 7 in a couple of days and I already own a HP TouchPad running CM9. I want to know can I tether my dongle's internet on my nexus 7 with the HP Touchpad via Wifi or bluetooth?
Click to expand...
Click to collapse
That's a dam fine question . The word FrankenConnection instantly sprung to mind :laugh: I haven't got the tablet in front of me at the moment and off the top of my head I'd say probably not by default.
However, It wouldn't be too difficult to enable on a technical level, it's all about your ip routing tables, they are probably numerous apps on play to do it, although personally i've a little no success with then. Cyanogenmod has it built into to the rom, at least on CM9 on my Sensation and that works a treat. I will have a proper look as It could be crazy enough to work!. :good:
had a go but no luck
using a Huawei E353 dongle with a variation of a 3 sim. has its own APN and a static IP, left over from a work project.
flashed the new boot, copied the new system and made the permissions mod. the various apps show up
under about tablet it shows baseband as unknown and if i try to add an APN it goes through the motions but doesnt add it to the list.
I've attached the logs, i'm no developer but i can follow instructions if any one can suggest any thing. there is every possibility i've messed up in the install so feel free to suggest dumb stuff that i should have known in the first place.
It could just be that the dongle isn't supported in which case we can chalk up a zte MF112 as been a duffer as well (had one kicking about so gave it a go)
laz2336 said:
using a Huawei E353 dongle with a variation of a 3 sim. has its own APN and a static IP, left over from a work project.
flashed the new boot, copied the new system and made the permissions mod. the various apps show up
under about tablet it shows baseband as unknown and if i try to add an APN it goes through the motions but doesnt add it to the list.
I've attached the logs, i'm no developer but i can follow instructions if any one can suggest any thing. there is every possibility i've messed up in the install so feel free to suggest dumb stuff that i should have known in the first place.
It could just be that the dongle isn't supported in which case we can chalk up a zte MF112 as been a duffer as well (had one kicking about so gave it a go)
Click to expand...
Click to collapse
Hi There,
Thanks for trying...... The Logcat proved useful. As many a woman has said to me, "It's not you it's me" :laugh: ..... You need to make the rest of the added files in /system/bin executable.
Code:
adb shell chmod 755 /system/bin/usb_modeswitch
adb shell chmod 755 /system/bin/rild
this line in the logcat explains it all
Code:
E/logwrapper( 842): executing /system/bin/usb_modeswitch failed: Permission denied
Good Luck and thanks for the detailed info...
It Lives!!!
I can see mobile networks, signal strength and all that good stuff. just need to figure out the APN details now for this cranky sim
top job trevd
laz2336 said:
I can see mobile networks, signal strength and all that good stuff. just need to figure out the APN details now for this cranky sim
top job trevd
Click to expand...
Click to collapse
It should pull the apn off the sim automatically.... the Radio Interface Layer may need a bit more tweaking, If you want to post more logcats, I wouldn't mind a cheeky look because that's how I get my kicks
Don't forget to turn your Wifi Off...... And sometimes turning data roaming on helps. especially with t-mobile/orange in the UK
happy to run logs for you. i will say though that this is no run of the mill sim, it sits on top of 3 as a carrier but has its own 3rd party APN, login details and a statip IP address when it is connected. it does pick the apn from the sim and show the default 3 apn settings, i just need to tweak them a bit.
I'll find a hub and get some logs with modem hooked up.
update
wow these logs get big quickly. this one has the modem been removed, reconnected, negotiating with the network and trying to log in. I've removed apn,usernames and passwords and replaced them with <APN> <username> <password>. I can give you the APN name over pm if it helps but for security reasons i can't give out the login details, bit too company specific.
laz2336 said:
happy to run logs for you. i will say though that this is no run of the mill sim, it sits on top of 3 as a carrier but has its own 3rd party APN, login details and a statip IP address when it is connected. it does pick the apn from the sim and show the default 3 apn settings, i just need to tweak them a bit.
I'll find a hub and get some logs with modem hooked up.
Click to expand...
Click to collapse
A Bit like GiffGaff!, Cyanogenmod Rom maintain a hugh list, I think he must have got every carrier in the world, Check it out here ( apns-conf.xml on github )
trevd said:
A Bit like GiffGaff!, Cyanogenmod Rom maintain a hugh list, I think he must have got every carrier in the world, Check it out here ( apns-conf.xml on github )
Click to expand...
Click to collapse
just had a quick search, he aint got mine
bit more of an update, hooked up the ZTE MF112 in the office this morning it seen and sees the network. This dongle is unlocked so i've given it a go with my own vodafone sim from my phone. copied the apn settings across from the phone (just the standard vodafone 'internet' APN), it goes through the the motions of trying to connect but never gets there. I'll fire up the logging a bit later and get you a bit more data.
on a side note so far both these dongles have been able to be connected while the device is turned on and been picked up automaticaly.
I think it may be more permissions
laz2336 said:
bit more of an update, hooked up the ZTE MF112 in the office this morning it seen and sees the network. This dongle is unlocked so i've given it a go with my own vodafone sim from my phone. copied the apn settings across from the phone (just the standard vodafone 'internet' APN), it goes through the the motions of trying to connect but never gets there. I'll fire up the logging a bit later and get you a bit more data.
on a side note so far both these dongles have been able to be connected while the device is turned on and been picked up automaticaly.
Click to expand...
Click to collapse
Hi I had a little sleep on it, it's probably more persmission issues *facepalm*
Code:
adb shell chmod 755 /system/etc/ppp/init_pppd_gprs
adb shell chmod 755 /system/etc/ppp/ip-up-gprs
adb shell chmod 755 /system/etc/ppp/ip-down-gprs
As a test You can try running
Code:
adb shell /system/etc/ppp/init_pppd_gprs
which should start a native connection ( the modem will connect but android won't know about it ), although you can use the built in browser and Gapps ( play , gmail ,youtube etc ) as they don't use androids connectivity service to check for connections
no logs yet but heres the update so far.
set the permissions on those three files and had another go. no difference. do all the files that get put in the ppp directory need to be executable?
trying to start the connection with init_pppd_gprs doesn't manage to connect with either dongle, though the E353 does seem to get further. it moves on to a new line in terminal emulator with out returning any thing. with the MF112 it gets quite vocal about not been able to find the usb device despite it showing as been registered on the network under system properties.
sadly can't put the voda sim in the E353 as the bloddy thing is locked.(did try, though it pulls the APN details it won't see the voda network)

[Q] IPv6 Wifi doesn't get default route CM 10.0

Hi All,
I upgraded to CM 10.0.0 stable this morning and in the course of things noticed that IPv6 wasn't working on my WiFi connection. I have native dual stack available and all my other devices have connectivity for both ipv4 & ipv6 (on WiFi or Ethernet)
After a bit of digging I noticed that the wlan0 interface was getting a global ipv6 address but no default route was being added. The setting that controls router advertisements (RA) for the kernel is /proc/sys/net/ipv6/conf/wlan0/accept_ra_defrtr The accept_ra_defrtr setting is set to 0 for every interface by /init.qcom.sh I believe.
Code:
#
# Suppress default route installation during RA for IPV6; user space will take
# care of this
#
for file in /proc/sys/net/ipv6/conf/*
do
echo 0 > $file/accept_ra_defrtr
done
If I manually set /proc/sys/net/ipv6/conf/wlan0/accept_ra_defrtr to 1, I will get ipv6 connectivity over WiFi. The problem is this isn't persistent across reboots. Another potential problem is it contradicts the stated reason for setting the value to 0 in init.qcom.sh which is to let some user space application handle the configuration of ipv6. I suppose I could get it persistent if I added an echo line to put 1 into accept_ra_defrtr for wlan0 only.
This is as far as I could get, so my questions are:
1) What are these user space application(s)?
2) How can I configure the user space application(s) to configure the default route from RA when on WiFi?
BTW, ipv6 works without any fuss when I connect to LTE. I have the Verizon variant of the Galaxy S3.
This thread tipped me to the accept_ra_defrtr
http://forum.xda-developers.com/showthread.php?t=1672490
It seems that this issue has existed for quite some time. After some more searching, I'm finding reports of this issue with somewhat old time stamps. I'm kind of shocked actually because my old Droid X worked with IPv6 on WiFi. I never even thought to test it with the stock GS3 rom I had on my phone before switching to CM10.
Does anyone know if IPv6 on WiFi works with the stock image?
Oh well, the info is out there. Perhaps some day this will get fixed.
code.google.com/p/android/issues/detail?id=39052
code.google.com/p/android/issues/detail?id=3389 check out the link collection at the bottom.

prevent android being "smart" about wifi connectivity

when I connect to a captive wifi, I want to use the connection as is (maybe I want to login without telling google - since the builtin authenticator uses their gstatic domain, or maybe I want to probe the network as it is being redirected, or maybe I just want firefox to manage my password to the portal, etc)
but after I select "use wifi as is" on the android webview builtin auth screen, android starts to route all and every traffic to my 3g/4g data connection instead, until I disable and re-enable wifi.
it will only ever redirect traffic to wifi after it successfully got the correct 204 from gstatic.com
is there anyway to work around this?
I am on android6, but I think I has always been like that.
gcbxda said:
when I connect to a captive wifi, I want to use the connection as is (maybe I want to login without telling google - since the builtin authenticator uses their gstatic domain, or maybe I want to probe the network as it is being redirected, or maybe I just want firefox to manage my password to the portal, etc)
but after I select "use wifi as is" on the android webview builtin auth screen, android starts to route all and every traffic to my 3g/4g data connection instead, until I disable and re-enable wifi.
it will only ever redirect traffic to wifi after it successfully got the correct 204 from gstatic.com
is there anyway to work around this?
I am on android6, but I think I has always been like that.
Click to expand...
Click to collapse
Do you have any kind of Linux ide? Have you tried making a tunnel?
Or is that what your looking for. I'm not 100% sure what your looking for. If your trying to skip Hotspot authentication? Or anything like that Then a tunnel would work fine.
Sorry I can't be of much else help
If your phone is rooted or has a custom ROM (Which would obviously indicate that the phone is rooted), there is a solution that you can try using a terminal (Or ADB shell).
Issue the command: "settings put global captive_portal_detection_enabled 0" That should prevent captive portal detection and gstatic confirmation. This should work, I haven't tried it personally though.
Additionally, you can setup a captive server.
Issue the command: "settings put global captive_portal_server g.cn"
Restart your phone, and you should have access to the pages.
Basically, connecting as is, requires you to reach a site that does not require 204 confirmation and afterward other sites should be accessible. Let me know if this helps.
Josh Ross said:
If your phone is rooted or has a custom ROM (Which would obviously indicate that the phone is rooted), there is a solution that you can try using a terminal (Or ADB shell).
Issue the command: "settings put global captive_portal_detection_enabled 0" That should prevent captive portal detection and gstatic confirmation. This should work, I haven't tried it personally though.
Additionally, you can setup a captive server.
Issue the command: "settings put global captive_portal_server g.cn"
Restart your phone, and you should have access to the pages.
Basically, connecting as is, requires you to reach a site that does not require 204 confirmation and afterward other sites should be accessible. Let me know if this helps.
Click to expand...
Click to collapse
no root on the phone (damn blackberry priv) and no control of the portal.
this is so infuriating. This is trivial, banal even, on any device i control. Feel like a kid on training wheels every time i touch my phone.

Tethering: Add xt_HL.ko to kernel - how to add a module to the kernel

Hello,
Service: Tmobile, Phone: Pixel 3a, rooted, Magisk
I'm able to setup my Tmobile phone's hotspot and share data to my devices. However, it's limited to ~0.5Mpbs. I've found many guides, Magisk modules, etc. I managed to get my Laptop/PC to get over this throttle limit by:
*Using the "VPN Hotspot" app which masks the laptops data so it looks like its coming from the phone
*Set TTL on Laptop/PC to 65
Issue: I can't set the TTL on many devices that connect so they still get throttled. Using an app like "TTL Editor" doesn't work (it fails), because I'm guessing I don't have the requirements: "Kernel support for Netfilter TTL packet mangling for your kernel (xt_HL.ko)" https://play.google.com/store/apps/details?id=org.segin.ttleditor&hl=en_US&gl=US
I tried stock ROMs Android 10 & 11. I also tried LineageOS18.1 which mentions this module so was hoping it would work: https://github.com/LineageOS/android_kernel_google_msm-4.9/search?q=xt_HL , but perhaps more needs to be done? I ran into things like iptables patch-o-matic https://netfilter.org/projects/patch-o-matic/index.html, not sure if this is needed, but cant find any info on how to even patch if that's needed.
CMD:
su iptables -t mangle -A POSTROUTING -j TTL --ttl-set 64
Error: iptables v1.8.4 (legacy) unknown option "--ttl-set"
Doesnt do anything either:
echo "65" > /proc/sys/net/ipv4/ip_default_ttl
I have career in computing/dev, but my Linux is limited & have never compiled a Kernel. I found this: https://wiki.lineageos.org/devices/sargo/build but if I even got that far and was able to succeed, I'm not sure how to add this module - or if that's even what I need.
Any help or a clue would be much appreciated!
Some info for anyone that comes across this: https://forum.xda-developers.com/t/...-tether-lineageos-18-1.4295601/#post-86183959

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