ath5k: No connection with 5424 and latest compat-old

I've installed the latest compat-wireless-2.6-old on Debian 2.6.26-1 i686 v2.6.26-7.  I downloaded it last night Oct 13, 2008.

naga:~/compat-wireless-2.6-old# cat compat-release
v4.5-56-gcd7615b

I can build, install, and modprobe the ath5k module, giving:

Oct  14 23:31:09 naga kernel: [17974.660295] ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 17 (level, low) -> IRQ 17
Oct  14 23:31:09 naga kernel: [17974.660368] ath5k_pci 0000:03:00.0: registered as 'phy0'
Oct  14 23:31:09 naga kernel: [17974.789588] phy0: Selected rate control algorithm 'pid'
Oct  14 23:31:09 naga kernel: [17974.790580] Registered led device: ath5k-phy0::rx
Oct  14 23:31:09 naga kernel: [17974.790602] Registered led device: ath5k-phy0::tx
Oct  14 23:31:09 naga kernel: [17974.790605] ath5k phy0: Atheros AR5424 chip found (MAC: 0xa3, PHY: 0x61)
Oct  14 23:31:09 naga kernel: [17974.814333] udev: renamed network interface wlan0 to ath0

When I try to ifup the interface, connecting through DHCP, I get no connection, and in the kernel log, I just get:

Oct  5 20:32:17 naga kernel: [18042.759550] ADDRCONF(NETDEV_UP): ath0: link is not ready

iwlist ath0 scan works, however.

Thanks,
Jerry Quinn