diff --git a/tools/build_bm_multi.sh b/tools/build_bm_multi.sh
index f1242ee..52b9b4e 100755
--- a/tools/build_bm_multi.sh
+++ b/tools/build_bm_multi.sh
@@ -6,7 +6,7 @@
 SHELL_AFTER_RUN=no
 
 # Variables common amongst all hosts in the cluster
-COMMON_VARS="MYSQL_HOST=$HEAD_HOST RABBIT_HOST=$HEAD_HOST GLANCE_HOSTPORT=$HEAD_HOST:9292 NET_MAN=FlatDHCPManager FLAT_INTERFACE=eth0 FLOATING_RANGE=$FLOATING_RANGE MULTI_HOST=1 SHELL_AFTER_RUN=$SHELL_AFTER_RUN"
+COMMON_VARS="MYSQL_HOST=$HEAD_HOST RABBIT_HOST=$HEAD_HOST GLANCE_HOSTPORT=$HEAD_HOST:9292 NETWORK_MANAGER=FlatDHCPManager FLAT_INTERFACE=eth0 FLOATING_RANGE=$FLOATING_RANGE MULTI_HOST=1 SHELL_AFTER_RUN=$SHELL_AFTER_RUN"
 
 # Helper to launch containers
 function run_bm {