I just installed the latest kernel and root filesystem on my Pandaboard (non-ES). When logging in, I noticed that the eth0 and wlan interfaces were there and it got an IP address via DHCP on eth0.
Then I updated the system via pacman -Syu, it asked if it should replace gnupg with gnupg2 (I said yes) and if it should replace procps with procps-ng (I said yes the first time I tried, I also treid no after reinstalling, didn't make a difference).
After updating everything, I rebootet, and the network connection was gone: no eth0, no wlan0 interface.
What am I missing?
UPDATE: Same effect on BeagleBoard-XM, no eth0 after update (but then again, it's the same kernel with same packages)