Bug 1530: Limit IP addresses

Adds an exit to the awk command so that only the first IP address is used on
a system that might have more than one IP address on the chosen interface

Fixes bug 1530

Change-Id: I7d5775ed1c1e801a338e048576d5106dc6c3d23a
Signed-off-by: beierlm <mark.beierl@canonical.com>
diff --git a/installers/full_install_osm.sh b/installers/full_install_osm.sh
index 27e487f..7594984 100755
--- a/installers/full_install_osm.sh
+++ b/installers/full_install_osm.sh
@@ -647,7 +647,7 @@
     DEFAULT_IF=$(ip route list|awk '$1=="default" {print $5; exit}')
     [ -z "$DEFAULT_IF" ] && DEFAULT_IF=$(route -n |awk '$1~/^0.0.0.0/ {print $8; exit}')
     [ -z "$DEFAULT_IF" ] && FATAL "Not possible to determine the interface with the default route 0.0.0.0"
-    DEFAULT_IP=`ip -o -4 a s ${DEFAULT_IF} |awk '{split($4,a,"/"); print a[1]}'`
+    DEFAULT_IP=`ip -o -4 a s ${DEFAULT_IF} |awk '{split($4,a,"/"); print a[1]; exit}'`
     [ -z "$DEFAULT_IP" ] && FATAL "Not possible to determine the IP address of the interface with the default route"
 
     # configure apt proxy