Lol, interesting thread man! I never count on what ISP guys say. But neways...
Here's my version from mii-tool and dmesg!
mii-tool -l
Quote:
|
eth0: negotiated 100baseTx-FD flow-control, link ok
|
dmesg | grep eth0
Quote:
ADDRCONF(NETDEV_UP): eth0: link is not ready
0000:00:19.0: eth0: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
|
I'm not sure, but I don't think half-duplex is the only requisite for dhcp. The interface usually advertises its medium and the parameters should be autodetected! But neways, congrats. It would be very kind of you if you post this question in some router related forums or fedora/centos forums and leave us with an exact answer if you get any!

Also, by any chance if u dlded or finally got fedora live cd, do check that tooo reflecting an answer here!