diff --git a/network/network.j2 b/network/network.j2
index ffc2a95db2..9ce02906a0 100644
--- a/network/network.j2
+++ b/network/network.j2
@@ -171,8 +171,8 @@ resources:
     # NOTE(hjensas): Depends-On here to ensure we always create the base subnet
     #   first. We can only set the segment for existing subnet if there is only
     #   one segment and only one existing subnet on the network.
-{%- if subnet.external_resource_segment_id|default('') %}
-    external_id: {{ subnet.external_resource_segment_id }}
+{%- if network.subnets[subnet].external_resource_segment_id|default('') %}
+    external_id: {{ network.subnets[subnet].external_resource_segment_id }}
 {%- else %}
     depends_on: {{network.name}}Subnet
 {%- endif %}
@@ -184,8 +184,8 @@ resources:
 
   {{network.name}}Subnet_{{subnet}}:
     type: OS::Neutron::Subnet
-{%- if subnet.external_resource_subnet_id|default('') %}
-    external_id: {{ subnet.external_resource_subnet_id }}
+{%- if network.subnets[subnet].external_resource_subnet_id|default('') %}
+    external_id: {{ network.subnets[subnet].external_resource_subnet_id }}
 {%- endif %}
     properties:
 {%- if ":" in network.ip_subnet or network.ipv6 or ipv6_override %}