* abort if fail to bind IP address to NIC

[lab.git] / iproute / setroute.sh

diff --git a/iproute/setroute.sh b/iproute/setroute.sh
index f493901..668fc59 100644 (file)
--- a/iproute/setroute.sh
+++ b/iproute/setroute.sh
@@ -28,6 +28,11 @@ fi
 
 # get IP address, network mask, default gateway info
 IPADDR=`/sbin/ip addr show dev ${IFACE} | grep -w inet | cut -d t -f 2 | cut -d ' ' -f 2 | cut -d / -f 1`
+if [ -z ${IPADDR} ]; then
+    # fail to bind IP address to device
+    echo "${IFACE} has no IP address."
+    exit
+fi
 NETWORK=`/sbin/ip route show dev ${IFACE} | grep -w ${IPADDR} | cut -d ' ' -f 1`
 
 if [ -z "${GATEWAY}" ]; then