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[Q] Enable both wifi and mobile data for multihoming

This might sound like a slightly odd thing to do, but I am trying to enable both wifi and mobile data on an Motorola Xoom pad at the same time. I need both interfaces as I am exploring multihoming of mobile devices. To illustrate the current behavior of the xoom.
sh-4.1# netcfg
...
ppp0 UP 95.209.163.33 255.255.255.255 0x000010d1
sh-4.1# svc wifi enable
sh-4.1# netcfg
...
ppp0 UP 95.209.163.33 255.255.255.255 0x000010d1
wlan0 UP 0.0.0.0 0.0.0.0 0x00001043
sh-4.1# netcfg
...
ppp0 DOWN 0.0.0.0 0.0.0.0 0x00001090
wlan0 UP 130.229.167.92 255.255.192.0 0x00001043
sh-4.1# netcfg
...
wlan0 UP 130.229.167.92 255.255.192.0 0x00001043
It seems that enabling data over wlan0 automatically disables the mobile data. Is there any known way to prevent this and have both interfaces enabled at the same time?
I have root access on the tablet and I am not afraid to write some code if that is what is needed. I just don't know where to start.
ps.
I have tried searching and not found any similar question.
ds.
/Pehr

[Q] VPNC Route Help

So I inadvertently killed my D1 by drowning it in a river and work sent me a new D3.
With a rooted D1, I was able to get VPNC to a Cisco working and <whisper>WiFi tether; I wanted the same usability in the D3. A little trickier getting things set up, but I'm just about there.
With wonderful resources like you people, found a radio tweak, and also that the D3 has tun built in (can see dev/net/tun), so with VPNC widget, got connected, see our Cisco banner text and issued IP in the VPNC log.
However, once connected to VPN, I can't access internet and can't ping any of our internal IPs either...I think my routes are wrong.
But, I don't know enough about setting up the routing table and was hoping someone could steer me in the right direction? I would like to manually adjust them, see if it works, then hopefully script it for after connection.
Not sure what anyone might need, but I'll start with this:
Before...
ip route list
66.174.201.64 dev ppp0 scope link
66.174.201.64 dev ppp0 proto kernel scope link src 10.251.3.122
default via 66.174.201.64 dev ppp0
netcfg
lo UP 127.0.0.1 255.0.0.0 0x00000049
usb0 DOWN 0.0.0.0 0.0.0.0 0x00001002
gether0 DOWN 0.0.0.0 0.0.0.0 0x00001002
sit0 DOWN 0.0.0.0 0.0.0.0 0x00000080
ip6tnl0 DOWN 0.0.0.0 0.0.0.0 0x00000080
tun DOWN 0.0.0.0 0.0.0.0 0x00001002
ppp0 UP 10.251.3.122 255.255.255.255 0x000010d1
After VPN connected...
66.174.201.64 dev ppp0 scope link
66.174.201.64 dev ppp0 proto kernel scope link src 10.251.3.122
default via 66.174.201.64 dev ppp0
netcfg
lo UP 127.0.0.1 255.0.0.0 0x00000049
usb0 DOWN 0.0.0.0 0.0.0.0 0x00001002
gether0 DOWN 0.0.0.0 0.0.0.0 0x00001002
sit0 DOWN 0.0.0.0 0.0.0.0 0x00000080
ip6tnl0 DOWN 0.0.0.0 0.0.0.0 0x00000080
tun DOWN 0.0.0.0 0.0.0.0 0x00001002
tun0 UP 192.168.144.8 255.255.255.255 0x000010d1
ppp0 UP 10.251.3.122 255.255.255.255 0x000010d1
I appreciate anyone taking the time to help me out.

Update...
Apparently, I found my busybox wasn't symlinked properly, so things like grep weren't working...that's why the usual vpnc-script file wasn't updating routes as it normally would. Updated bb and after connecting with VPNC, I now get:
ip route list
<myciscoip> via 66.174.201.64 dev ppp0 src 10.242.253.151 mtu 1500
advmss 1460
66.174.201.64 dev ppp0 scope link
66.174.201.64 dev ppp0 proto kernel scope link src 10.242.253.151
default dev tun0 scope link
netcfg
lo UP 127.0.0.1 255.0.0.0 0x00000049
usb0 DOWN 0.0.0.0 0.0.0.0 0x00001002
gether0 DOWN 0.0.0.0 0.0.0.0 0x00001002
sit0 DOWN 0.0.0.0 0.0.0.0 0x00000080
ip6tnl0 DOWN 0.0.0.0 0.0.0.0 0x00000080
tun DOWN 0.0.0.0 0.0.0.0 0x00001002
ppp0 UP 10.242.253.151 255.255.255.255 0x000010d1
tun0 UP 192.168.144.5 255.255.255.255 0x000010d1
Unfortunately, I still can't reach internet or ping any of our internal IPs? Like I said, I don't know enough about TCP route configuration to know what's missing/wrong from the phone's routing table.
Anyone with some insight?

Interesting...came across this (site wouldn't allow me to post link, so I mucked it a bit): androidforums.com /evo-4g-support-troubleshooting/ 140775-post-froyo-vpn-issues.html
They could connect to VPN if using WiFi, but not 3g. So, I tried connecting to my home WiFi, then VPN to work Cisco on phone...voila! Works fine...ping internal work IPs, facebook is blocked in browser due to our WebSense...just as expected.
So, can't VPN over 3g connection just yet....

Please use the Q&A Forum for questions Thanks
Moving to Q&A

I've got it working in mine by doing the folowing (Thether + 3G):
First try using IP instead of DNS. Otherwise you'll need what I need probably (strip your APN of MMS etc.)
Create a new APN. Only fill in mimimal:
Name: Internet
APN: Internet
Type: Internet
Rest default. Worked for me. Adding MMS proxy etc. Blocks my VPN

Samsung Tab S 10.5- Cannot Use WLAN And Ethernet At The Same Time

networ
Dear all,
I am facing some issues with my device and I think that those can be a general "problem" of Android.
First I will describe what I want to do:
I have got an Android tablet with root access. (Samsung Tab S 10.5) and a docking station (Samsung EE-MT800) with ethernet socket.
When I plug in the network cable, I can configure the ethernet interface within Android settings or I can configure it with terminal emulator.
This is working fine, but: As soon as I want to use both, the WLAN and the Ethernet itnerface I cannot use both at one time. If have checked netcfg and it shows the interfaces wlan0 and eth0 "UP" and configured with the correct IP addresses. The routes were added correctly and the default route is set to the WLAN and the ethernet default route not present. BUT I cannot ping devices connected to the ethernet interface directly. After disabling wlan0 interface, a ping is possible.
References from CLI:
[email protected]:/ # netcfg
wlan0 UP 192.168.2.108/24 0x00001043 78:40:e4:11:11:11
sit0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00
eth0 UP 192.168.5.77/24 0x00001043 6c:a7:fa:00:00:00
p2p0 UP 0.0.0.0/0 0x00001003 7a:40:e4:16:e3:61
lo UP 127.0.0.1/8 0x00000049 00:00:00:00:00:00
rmnet1 DOWN 0.0.0.0/0 0x00001090 00:00:00:00:00:00
rmnet0 DOWN 0.0.0.0/0 0x00001090 00:00:00:00:00:00
rmnet2 DOWN 0.0.0.0/0 0x00001090 00:00:00:00:00:00
rmnet3 DOWN 0.0.0.0/0 0x00001090 00:00:00:00:00:00
ip6tnl0 DOWN 0.0.0.0/0 0x00000080 00:00:00:00:00:00
[email protected]:/ # ip route show
default via 192.168.2.1 dev wlan0 metric 310
192.168.2.0/24 dev wlan0 proto kernel scope link src 192.168.2.108 metric 310
192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.77
Ping:
192.168.2.1 and 8.8.8.8 possible,
192.168.5.1 impossible
After disabling wlan0 interface, ping is possible:
[email protected]:/ # netcfg wlan0 down
[email protected]:/ # ip route show
192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.77
[email protected]:/ # ping 192.168.5.1
PING 192.168.5.1 (192.168.5.1) 56(84) bytes of data.
64 bytes from 192.168.5.1: icmp_seq=1 ttl=64 time=2.06 ms
64 bytes from 192.168.5.1: icmp_seq=2 ttl=64 time=1.17 ms
64 bytes from 192.168.5.1: icmp_seq=3 ttl=64 time=1.10 ms
64 bytes from 192.168.5.1: icmp_seq=4 ttl=64 time=1.02 ms
^C
--- 192.168.5.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 1.025/1.342/2.063/0.419 ms
Can somebody help me with this?

Ethernet partial working on Lenovo YT3-X50L

I have a (rooted) Lenovo Yoga Tablet 3 with Android 6.0.1 with broken RF interface (no Wifi, no Bluetooth...). So I tried to get up the Ethernet.
I used 3 different dongles, but no one was plug and play with this tablet (but all 3 work plug and play on other tablets...)
As it didn't come up with simply plug in, I managed the connection by adding (after plug in the dongle):
Code:
su
# as dhcpcd uses default table main and it isn't in the rules
ip rule add from all lookup main pref 1
# set up eth0 via dhcp
dhcpcd eth0
# here only ip addresses work, so for the dns I have to set the (android) resolver
ndc resolver setnetdns eth0 <MYROUTER> 8.8.8.8 8.8.4.4
Now all browsers and a ping app work fine, but messengers (Whatsapp, Telegram...) say 'no internet'.
When I connect via usb with gnirehtet everything works fine but I don't like to spend an extra PC for the reverese tethering server. So I changed the usb cable with the ethernet dongle and everything works fine until I stop the VPN left open. Ifconfig shows me that there are no packeges routet via tun0, just via eth0. Unfortunally I couldn't get up another VPN setup as all clients tried (even the android built in VPN) showed up 'no internet'.
So, has anybody an idea what I can do without the gnirehtet workaround?

[CLOSED]Android usbnet networking setup

Hello there!
I have android 10 based device and I have troubles with configuring usbnet device automatically.
I've modified kernel config, added `CONFIG_USB_USBNET=y` etc. Now I have usb0 device, and I can assign ip and routing to it, but it seems that there is another layer of networking setup in android: utility named ndc.
I tried next script:
```
ip link set usb0 up
ip addr add 192.168.1.2/24 dev usb0
ndc network create 101
ndc network interface add 101 usb0
ndc network route add 101 usb0 192.168.1.0/24
ndc network default set 101
```
Now I can ping device on the other side of usb0 interface but I'm losing wlan0 connection. Sure I can do next:
```
ndc network interface add 101 wlan0
ndc network route add 101 wlan0 0.0.0.0/0 10.0.0.1
ndc resolver setifdns wlan0 8.8.8.8 8.8.4.4
```
I also tried to modify default ROM:
uncomment in frameworks/base/core/res/res/values/config.xml
```
<string translatable="false" name="config_usb_ethernet_iface_regex">usb\\d</string>
<!-- Configuration of Ethernet interfaces in the following format:
<interface name|mac address>;[Network Capabilities];[IP config];[Override Transport]
Where
[Network Capabilities] Optional. A comma seprated list of network capabilities.
Values must be from NetworkCapabilities#NET_CAPABILITIES_* constants.
[IP config] Optional. If empty or not specified - DHCP will be used, otherwise
use the following format to specify static IP configuration:
ip=<ip-address/mask> gateway=<ip-address> dns=<comma-sep-ip-addresses>
domains=<comma-sep-domains>
[Override Transport] Optional. An override network transport type to allow
the propagation of an interface type on the other end of a local Ethernet
interface. Value must be from NetworkCapabilities#TRANSPORT_* constants. If
left out, this will default to TRANSPORT_ETHERNET.
-->
<string-array translatable="false" name="config_ethernet_interfaces">
<!--
<item>eth1;12,13,14,15;ip=192.168.0.10/24 gateway=192.168.0.1 dns=4.4.4.4,8.8.8.8</item>
<item>eth2;;ip=192.168.0.11/24</item>
<item>eth3;12,13,14,15;ip=192.168.0.12/24;1</item>
-->
<item>usb0;13,14,15;ip=192.168.1.2/24;8</item> #this line
</string-array>
```
But no luck usb0 interface remain unconfigured after boot.
After that I can ping both usb0 peer and wlan0 direct gateway but default route(0.0.0.0/0) not working. Don't understand why...
In general, I have 2 questions:
1. how to automate IP configuration for usb0 network in time of building ROM?
2. how to make usb0 and wlan0 play well together? Ideally without creating new network via ndc etc.
Are there any manuals about network configuration?

swexru said:
Hello there!
I have android 10 based device and I have troubles with configuring usbnet device automatically.
I've modified kernel config, added `CONFIG_USB_USBNET=y` etc. Now I have usb0 device, and I can assign ip and routing to it, but it seems that there is another layer of networking setup in android: utility named ndc.
I tried next script:
```
ip link set usb0 up
ip addr add 192.168.1.2/24 dev usb0
ndc network create 101
ndc network interface add 101 usb0
ndc network route add 101 usb0 192.168.1.0/24
ndc network default set 101
```
Now I can ping device on the other side of usb0 interface but I'm losing wlan0 connection. Sure I can do next:
```
ndc network interface add 101 wlan0
ndc network route add 101 wlan0 0.0.0.0/0 10.0.0.1
ndc resolver setifdns wlan0 8.8.8.8 8.8.4.4
```
I also tried to modify default ROM:
uncomment in frameworks/base/core/res/res/values/config.xml
```
<string translatable="false" name="config_usb_ethernet_iface_regex">usb\\d</string>
<!-- Configuration of Ethernet interfaces in the following format:
<interface name|mac address>;[Network Capabilities];[IP config];[Override Transport]
Where
[Network Capabilities] Optional. A comma seprated list of network capabilities.
Values must be from NetworkCapabilities#NET_CAPABILITIES_* constants.
[IP config] Optional. If empty or not specified - DHCP will be used, otherwise
use the following format to specify static IP configuration:
ip=<ip-address/mask> gateway=<ip-address> dns=<comma-sep-ip-addresses>
domains=<comma-sep-domains>
[Override Transport] Optional. An override network transport type to allow
the propagation of an interface type on the other end of a local Ethernet
interface. Value must be from NetworkCapabilities#TRANSPORT_* constants. If
left out, this will default to TRANSPORT_ETHERNET.
-->
<string-array translatable="false" name="config_ethernet_interfaces">
<!--
<item>eth1;12,13,14,15;ip=192.168.0.10/24 gateway=192.168.0.1 dns=4.4.4.4,8.8.8.8</item>
<item>eth2;;ip=192.168.0.11/24</item>
<item>eth3;12,13,14,15;ip=192.168.0.12/24;1</item>
-->
<item>usb0;13,14,15;ip=192.168.1.2/24;8</item> #this line
</string-array>
```
But no luck usb0 interface remain unconfigured after boot.
After that I can ping both usb0 peer and wlan0 direct gateway but default route(0.0.0.0/0) not working. Don't understand why...
In general, I have 2 questions:
1. how to automate IP configuration for usb0 network in time of building ROM?
2. how to make usb0 and wlan0 play well together? Ideally without creating new network via ndc etc.
Are there any manuals about network configuration?
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