I am running FC4 on a Compaq Presario 2500.
I installed a PCMCIA Netgear wireless adapter that is not supported by system-config-network.
After looking on the web I managed to setup the wlan0 interface with the ndiswrapper driver and have it included in the network config so that it gets turned on and setup at boot.
All looked well but I was able to browse only with Konqueror, not Firefox.
After enabling network.dns.disableIPv6 I managed to get it working.
Pinging IPs and hosts works fine.
One problem remains: yum returns "Network is unreachable".
I tried elinks and pear too, same result.
Annoyingly enough WinXP on same machine works fine.
ifconfig wlan0 returns:
wlan0 Link encap:Ethernet HWaddr --:--:--:--:--:--
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: ----::---:----:----:---/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1289 errors:0 dropped:0 overruns:0 frame:0
TX packets:1409 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:987481 (964.3 KiB) TX bytes:304080 (296.9 KiB)
192.168.1.0 * 255.255.255.0 U 0 0 0 wlan0
default mygateway.ar7 0.0.0.0 UG 0 0 0 wlan0