-Auto-disable hook when MAC= detected

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@6127 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/share/xcat/netboot/esxi/47.xcat-networking

@@ -2,6 +2,10 @@
 #Default networking config supporting BOOTIF semantics
 #bring up one interface, if bonding, management software can do that 
 #after the fact
+MACADDR=`vsish -e get /system/bootCmdLine | grep MAC | sed 's/.*MAC=//'|sed 's/-/:/g'`
+if [ ! -z "$MACADDR" ]; then #if MAC= syntax detected, skip execution
+    return ${SUCCESS}
+fi
 MACADDR=`vsish -e get /system/bootCmdLine | grep BOOTIF | sed 's/.*BOOTIF=01-//'|sed 's/-/:/g'`
 if [ ! -z "$MACADDR" ]; then
     NIC=`esxcfg-nics -l|grep ${MACADDR}|awk '{print $1}'`