+# generate config for each present network device
+for interface in /sys/class/net/eth* /sys/class/net/ath* /sys/class/net/wlan*; do
+ [ -e ${interface} ] || continue
+# generate config for each present network device
+for interface in /sys/class/net/eth* /sys/class/net/ath* /sys/class/net/wlan*; do
+ [ -e ${interface} ] || continue