Luis, you configuration works very good with network manager.
In fact, I created a udev rule and a helper python script that will issue those configuration upon sticking the MD300 usb modem.
1) put the 50-md300modem.rules file in /etc/udev/rules.d/
2) put the md300-ethernet file in /usr/local/bin/.
3) chmod +x /usr/local/bin/md300-ethernet
4) sudo apt-get install python-serial.
5) sudo /etc/init.d/udev restart
Plug in you MD300 then wait about 20 seconds. NM should connect automagically.
Luis, you configuration works very good with network manager.
In fact, I created a udev rule and a helper python script that will issue those configuration upon sticking the MD300 usb modem.
1) put the 50-md300modem.rules file in /etc/udev/rules.d/ bin/md300- ethernet
2) put the md300-ethernet file in /usr/local/bin/.
3) chmod +x /usr/local/
4) sudo apt-get install python-serial.
5) sudo /etc/init.d/udev restart
Plug in you MD300 then wait about 20 seconds. NM should connect automagically.