Using ppp0 internet not accessibe when eth0 is connected but without internet connection

[ajayraj]

Below is the problem statement:-

1.3G GSM( Huewei E1320) connected.
2.LAN ethernet is connected.

State of the each one.

1. LAN(eth0) is connected to ASDL modem but without internet connected.
2. 3G GSM(ppp0) is connected is ready to take internet.

Now to the problem,
 This is a case where i have two internet connections, out of which one is temporarly not working.

        Actually i am trying to get internet connection from ppp0(3G GSM module) when eth0(LAN) is connected and without internet connection.

       So solve it, i tried routing to ppp0 as default. But not working when eth0 dont have any internet connection.

Say my ip route is as mentioned below:-

gateway 10.64.64.64 for ppp0
gateway 192.168.1.1 for eth0

I made the ppp0 as default, removing the eth0 from default route.
ip route add default via 10.64.64.64
ip route del default via 192.168.1.1
But internet not accessible.

   But when i plug the internet connection for LAN(eth0) by plugging internet cable to ADSL modem.Then i am able to get internet connection from ppp0(3G GSM module).

In short to summary:-

eth0 without internet connected and ppp0 with internet connection.
Default route is ppp0.
But still unable to access internet.

      I am out of steps to proceed in case of this problem. Can you confirm whether it is issue with network-manager.
I am specific stuck to this case.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1471183/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[ajayraj (ajayraj-j)]

Updated the package information.