I did FTP install with no network problems but after reboot eth0 is UNSPEC.
My guess is that there are more network card modules compiled into the CD-boot Kernel than into the ones you install.
How do I find out what network card module was used during FTP install so that I can include that in RC.conf.
What's the model of your network card? You can use google to get the module or post your card's model here.
A search with Google told me that I should use the sk98lin module with my Marvell 88E8001 based network adapter.
BTW, I haven't mentionned it in my previous post but you can use hwd to detect your hardware and help to configure xorg.
pacman -S hwd