From Fedora Project Wiki
Hi,
In fedora 11, eth0 interface won't be up by default. and for configuring modem, you will have to follow below steps: 1. install libwvstreams and wvdial rpms 2. install kudzu - this module is missing in Fedora 11, so you will have to install it. 3. configure network with modem, you will get ppp link.
Regards, Nilay Shah