In Fedora, the bridging module is loaded by default. If necessary, you can make sure that the module is loaded by issuing the following command as root:

~]# modprobe --first-time bridge
modprobe: ERROR: could not insert 'bridge': Module already in kernel

To display information about the module, issue the following command:

~]$ modinfo bridge

See the modprobe(8) man page for more command options.