In anaconda-220.127.116.11-2, when the "Add additional software repositories button"
is clicked, anaconda always tries to fetch a dhcp address, whether the network
interface is configured or not. (see bug #232512).
Even if the device is not configured, the installer then hangs forever while
waiting for a dhcp response.
There should probably be a timeout on waiting for that response.
*** This bug has been marked as a duplicate of 232512 ***