[CORD-1650]
Refactor interface/bridge handling

Change-Id: I83fd9eb3e8440ba277b7b4d1ed41cb18347b6916
diff --git a/roles/dns-nsd/defaults/main.yml b/roles/dns-nsd/defaults/main.yml
index 20f0fde..6d8f415 100644
--- a/roles/dns-nsd/defaults/main.yml
+++ b/roles/dns-nsd/defaults/main.yml
@@ -20,7 +20,7 @@
 
 headnode_dns: head1
 
-management_net_cidr: "192.168.200.0/24"
+management_net_cidr: "10.1.0.0/24"
 
 # node lists
 head_lxd_list: []