diff --git a/group_vars/dch-gw/dch-network.yml b/group_vars/dch-gw/dch-network.yml
index ec00a7e..24dfede 100644
--- a/group_vars/dch-gw/dch-network.yml
+++ b/group_vars/dch-gw/dch-network.yml
@@ -30,7 +30,7 @@ dch_networks:
   red:
     description: Non-domain member machines
     vlan_id: 101
-    ipv4_address: 172.31.1.1/24
+    ipv4_address: 172.31.1.0/24
     router_iface: vlan101
     dns_servers_v4:
     - 172.31.0.4