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. ** Attachment added: "UDEV rules" http://launchpadlibrarian.net/24470904/50-md300modem.rules -- NetworkManager does not work with modem "Sony Ericsson MD300" https://bugs.launchpad.net/bugs/277613 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs