+ ### Optional.
+ ### This network is used as the underlay network for inter-cluster
+ ### communication within CaaS. Setting this network can expose CaaS cluster
+ ### services to this network.
+ ### If unspecified, infra_internal used as a fallback option.
+ #caas_oam:
+ ### Optional network mtu
+ ### If not defined default value is used.
+ #mtu: <VALUE>
+
+ ### Network domains
+ #network_domains:
+ ### User defined name for network domain
+ #rack-1:
+ ### Network address in CIDR format
+ #cidr: <VALUE>
+
+ ### Optional vlan id
+ #vlan: <VALUE>
+
+ ### IP address of the gateway for default route.
+ ### If unspecified, the subnet's first IP address assumed.
+ #gateway: <VALUE>
+
+ ### Range for IPs
+ #ip_range_start: <VALUE>
+ #ip_range_end: <VALUE>
+
+ ### Optional static routes
+ #routes:
+ # - {to: <CIDR>, via: <IP>}
+