After a long time of searching, I have finally found a very simple way to use my PPC6800 as a modem for my Ubuntu installation. The below instructions are specific to Ubuntu and have been tested by me on 8.04 Hardy Heron.
Note: I can’t take credit for any of these instructions. The below two links basically both list the same information. Naturally, doing any of this is all at your own risk.
Ubuntu Support Forums (see post #23)
First of all, to be able to perform the operation that I will be outlining shortly, you will need to have the compiling tools for Ubuntu installed. Execute the command seen below from a terminal window. If you already have this package installed, please ignore.
sudo apt-get install automake
Once done, go on with the following:
sudo apt-get install subversion
svn co https://synce.svn.sourceforge.net/svnroot/synce/trunk/usb-rndis-lite
sudo make install
Once the above sequence has been completed, reboot.
After logging back into your desktop, do the following:
Plug in the phone via USB. On the phone go to programs/applications and select “Internet Sharing” and then select the following.
Network Connection: Phone as Modem
Within a few moments, you should be online and ready to surf the web just as if you had a network cable or a USB modem.
So, what does this do, you ask? Well, to be honest, I don’t know all the technicalities but what it looks like to me is that the above software essentially creates a way for Ubuntu to see PPC6800 using Internet Sharing as just any other networked connection and simply uses it as the Internet connection. It’s amazing how easy and smooth this use is and if are looking to use your PPC as a modem, you just can’t skip this.
Windows users: I found that this worked just as well on Windows Vista. It’s the first time I tried to do it on Vista as well so I’m not sure if it’s supposed to be that easy or not or if it’s related to my ROM upgrade at all but either way, I now have a way to easily connect to the Internet with my phone, whether it be Ubuntu or Vista.