Changing Static Ip adderess.

Very important! Are you using Angstrom on the BBB? If so, it uses Connman which is script driven. Do this to find out:

uname  -a

Those script rewrite the files you are trying to change.

Really.   Where is the file that I need to change to make the IP address changeable. 

First need to find your ethernet settings:

root@beaglebone:/var/lib/connman# ls -al

total 16

drwxr-xr-x 3 root root 4096 Jan 1 2000 .

drwxr-xr-x 18 root root 4096 Jan 1 2000 ..

drwx------ 2 root root 4096 Jan 1 2000 ethernet_c8a030ab323a_cable

-rw------- 1 root root 68 Jan 1 2000 settings

root@beaglebone:/var/lib/connman# cd ethernet_c8a030ab323a_cable/

root@beaglebone:/var/lib/connman/ethernet_c8a030ab323a_cable# ls

data settings settings.ODU2WW

root@beaglebone:/var/lib/connman/ethernet_c8a030ab323a_cable# more settings

[ethernet_c8a030ab323a_cable]

Name=Wired

AutoConnect=true

Modified=2000-01-01T01:18:21.869401Z

IPv4.method=dhcp

IPv4.DHCP.LastAddress=192.168.1.100

IPv6.method=auto

IPv6.privacy=disabled

So in my case my name is ethernet_c8a030ab323a_cable.

Look for /usr/lib/connman/test.

• In there you can use the script to set the Ethernet static IP using my name from above:

./set-ipv4-method ethernet_c8a030ab323a_cable manual 192.168.1.80 255.255.255.0 192.168.1.1

That should be saved in the connman file above.

Hope this helps,

Clem

Hi Clem,

I'm not sure this will work. There's an earlier link pasted above, that suggest connman is not used for USB network configuration.

Text from there:

OK, figured it out.  The usb0 interface is not configured using connman like eth0 is.  It's configured using udev.

This is why I think it's going to by different, or not as straightforward to change it. But also begs the question, why change it, given that for most practical scenarios, it is only used during initial setup. It may need changing if multiple BBBs are being connected to the same PC via USB, I don't know, but that's a not-normal scenario so it would be good to know the reason to want to change the IP addressing.

Hi Clem,

I'm not sure this will work. There's an earlier link pasted above, that suggest connman is not used for USB network configuration.

Text from there:

OK, figured it out.  The usb0 interface is not configured using connman like eth0 is.  It's configured using udev.

This is why I think it's going to by different, or not as straightforward to change it. But also begs the question, why change it, given that for most practical scenarios, it is only used during initial setup. It may need changing if multiple BBBs are being connected to the same PC via USB, I don't know, but that's a not-normal scenario so it would be good to know the reason to want to change the IP addressing.

The reason why is a need multiple BBB units in the same network.   They all cann't have the same Ip address.

Regards

Hi Daniel,

I understand that - my question is, why are there multiple BBBs hanging off USB, for you to need to change the IP addresses? If they are connected to the network via Ethernet, the problem goes away, due to DHCP.