diff --git a/virshall b/virshall
index 6081ce8..dd1f6df 100755
--- a/virshall
+++ b/virshall
@@ -19,5 +19,5 @@ ssh root@$HVN "set -x; for node in 0 1 2 3; do VM=vpp${LAB}-\${node}; virsh $CMD
 [ "$CMD" = "start" ] && {
   echo "*  Committing OVS config"
   scp overlays/$BUILD/ovs-config.sh root@$HVN:$LABDIR
-  ssh root@$HVN "set -x; $LABDIR/ovs-config.sh"
+  ssh root@$HVN "set -x; LAB=${LAB} $LABDIR/ovs-config.sh"
 }