diff --git a/config/samples/network-template-secret.yaml b/config/samples/network-template-secret.yaml
index f8b04c3..0d620a7 100644
--- a/config/samples/network-template-secret.yaml
+++ b/config/samples/network-template-secret.yaml
@@ -14,6 +14,7 @@ stringData:
   template: |
     {{ $netToIface := dict }}
     {{ $netToIp := dict }}
+    {{ $netToNetmask := dict }}
     links:
       {{- range .BuilderDomain.Interfaces }}
       - id: {{ .Name }}
@@ -29,6 +30,7 @@ stringData:
         {{- /* Save the network->interface mapping, needed below */ -}}
         {{- $_ := set $netToIface .NetworkName .Name }}
         {{- $_ := set $netToIp .NetworkName .IPAddress }}
+        {{- $_ := set $netToNetmask .NetworkName .NetMask }}
       {{- end }}
     networks:
       {{- range .Networks }}
@@ -36,7 +38,7 @@ stringData:
         type: {{ .Type }}
         link: {{ index $netToIface .Name }}
         ip_address: {{ index $netToIp .Name }}
-        #netmask: "TODO - see if needed when ip has CIDR range"
+        netmask: {{ index $netToNetmask .Name }}
         dns_nameservers: {{ .DNSServers }}
         {{- if .Routes }}
         routes:
diff --git a/docs/api/vino.md b/docs/api/vino.md
index 1f48a5c..cb441f7 100644
--- a/docs/api/vino.md
+++ b/docs/api/vino.md
@@ -287,6 +287,16 @@ string
 </tr>
 <tr>
 <td>
+<code>netMask</code><br>
+<em>
+string
+</em>
+</td>
+<td>
+</td>
+</tr>
+<tr>
+<td>
 <code>macAddress</code><br>
 <em>
 string
diff --git a/pkg/api/v1/vino_builder.go b/pkg/api/v1/vino_builder.go
index 2aff3e9..49d9871 100644
--- a/pkg/api/v1/vino_builder.go
+++ b/pkg/api/v1/vino_builder.go
@@ -31,6 +31,7 @@ type Builder struct {
 
 type BuilderNetworkInterface struct {
 	IPAddress        string `json:"ipAddress,omitempty"`
+	NetMask          string `json:"netMask,omitempty"`
 	MACAddress       string `json:"macAddress,omitempty"`
 	NetworkInterface `json:",inline"`
 }
diff --git a/pkg/managers/bmh.go b/pkg/managers/bmh.go
index bc0ccc5..7d67dd3 100644
--- a/pkg/managers/bmh.go
+++ b/pkg/managers/bmh.go
@@ -18,6 +18,7 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"net"
 	"text/template"
 	"time"
 
@@ -322,10 +323,15 @@ func (r *BMHManager) domainSpecificNetValues(
 		if err != nil {
 			return networkTemplateValues{}, err
 		}
+		netmask, err := convertNetmask(subnet)
+		if err != nil {
+			return networkTemplateValues{}, err
+		}
 		domainInterfaces = append(domainInterfaces, vinov1.BuilderNetworkInterface{
 			IPAddress:        ipAddress,
 			MACAddress:       macAddress,
 			NetworkInterface: iface,
+			NetMask:          netmask,
 		})
 
 		r.Logger.Info("Got MAC and IP for the network and node",
@@ -507,3 +513,17 @@ func applyRuntimeObject(ctx context.Context, key client.ObjectKey, obj client.Ob
 	}
 	return err
 }
+
+func convertNetmask(subnet string) (string, error) {
+	_, network, err := net.ParseCIDR(subnet)
+	if err != nil {
+		return "", err
+	}
+
+	m := network.Mask
+	if len(m) != 4 {
+		return "", fmt.Errorf("Couldn't parse netmask for subnet %s", subnet)
+	}
+
+	return fmt.Sprintf("%d.%d.%d.%d", m[0], m[1], m[2], m[3]), nil
+}