[Trouble With Wlan1]

Hey folks,

I'm trying to use the USB wireless card that came in the Pro pack to relay wifi using the directions at this post: http://forums.hak5.o...l__ wifi relay

However, I keep getting errors about wlan1 being a non-existant device occasionally. Looking at dmesg, I see this repeated:

[ 307.960000] usb 1-1: new high-speed USB device number 22 using ehci-platform
[ 313.140000] usb 1-1: ath9k_htc: Firmware htc_9271.fw requested
[ 313.530000] usb 1-1: ath9k_htc: Transferred FW: htc_9271.fw, size: 51272
[ 313.770000] ath9k_htc 1-1:1.0: ath9k_htc: HTC initialized with 33 credits
[ 313.970000] ath9k_htc 1-1:1.0: ath9k_htc: FW Version: 1.3
[ 313.970000] ath: EEPROM regdomain: 0x833a
[ 313.970000] ath: EEPROM indicates we should expect a country code
[ 313.970000] ath: doing EEPROM country->regdmn map search
[ 313.970000] ath: country maps to regdmn code: 0x37
[ 313.970000] ath: Country alpha2 being used: GB
[ 313.970000] ath: Regpair used: 0x37
[ 313.970000] ieee80211 phy20: Atheros AR9271 Rev:1
[ 313.980000] Registered led device: ath9k_htc-phy20
[ 319.300000] usb 1-1: USB disconnect, device number 22
[ 319.400000] ath: phy20: RX failed to go idle in 10 ms RXSM=0x81872a80
[ 319.420000] ath: phy20: DMA failed to stop in 10 ms AR_CR=0x81873cbc AR_DIAG_SW=0x81873cbc DMADBG_7=0x81873cbc
[ 319.440000] ath: phy20: DMA failed to stop in 10 ms AR_CR=0x81873cbc AR_DIAG_SW=0x81873cbc DMADBG_7=0x81873cbc
[ 319.560000] ath: phy20: RX failed to go idle in 10 ms RXSM=0x1
[ 319.570000] ath: phy20: DMA failed to stop in 10 ms AR_CR=0x81873cbc AR_DIAG_SW=0x81873cbc DMADBG_7=0x81873cbc
[ 319.690000] ath: phy20: RX failed to go idle in 10 ms RXSM=0x1
[ 319.700000] ath: phy20: DMA failed to stop in 10 ms AR_CR=0x81873cbc AR_DIAG_SW=0x81873cbc DMADBG_7=0x81873cbc
[ 319.720000] usb 1-1: ath9k_htc: USB layer deinitialized
[/CODE]

The phy## increments each time as well as the USB device number.

I'm using an MK4 running 2.7.0. It's powered via the included wall-wart. Besides the /etc/wpa_supplicant.conf and ~/wireless_connect.sh the configuration is otherwise factory defaults. Any ideas?