I'm seeing these messages from some f18 arm installs: Apr 3 17:31:05 arm02-builder12.arm.fedoraproject.org dhclient[771]: DHCPREQUEST on eth0 to 10.5.126.41 port 67 (xid=0x2bd0fbe4) Apr 3 17:31:05 arm02-builder12.arm.fedoraproject.org dhclient[771]: send_packet: Operation not permitted Apr 3 17:31:05 arm02-builder12.arm.fedoraproject.org dhclient[771]: dhclient.c:2663: Failed to send 300 byte long packet over fallback interface. over and over again. dhclient-4.2.5-7.fc18.armv7hl Happy to gather more info or try debugging.
Argh. Looks like this was some overly restrictive firewall rules... :( Sorry for the noise.