default nameserver to gateway
diff --git a/build_lxc.sh b/build_lxc.sh
index c0e33d6..d1f8aff 100755
--- a/build_lxc.sh
+++ b/build_lxc.sh
@@ -6,7 +6,7 @@
 CONTAINER_CIDR=${CONTAINER_CIDR:-$CONTAINER_IP/24}
 CONTAINER_NETMASK=${CONTAINER_NETMASK:-255.255.255.0}
 CONTAINER_GATEWAY=${CONTAINER_GATEWAY:-192.168.1.1}
-NAMESERVER=${NAMESERVER:-192.168.1.1}
+NAMESERVER=${NAMESERVER:-$CONTAINER_GATEWAY}
 COPYENV=${COPYENV:-1}
 
 # Param string to pass to stack.sh.  Like "EC2_DMZ_HOST=192.168.1.1 MYSQL_USER=nova"