diff --git a/cmd/microcloud/add.go b/cmd/microcloud/add.go
index 2c3dbcd09..ba078381c 100644
--- a/cmd/microcloud/add.go
+++ b/cmd/microcloud/add.go
@@ -73,15 +73,11 @@ func (c *cmdAdd) Run(cmd *cobra.Command, args []string) error {
 
 	cfg.name = status.Name
 	cfg.address = status.Address.Addr().String()
-	microcloudInternalNet, err := cfg.askAddress("")
+	_, err = cfg.askAddress("")
 	if err != nil {
 		return err
 	}
 
-	addingSystem := cfg.systems[cfg.name]
-	addingSystem.MicroCloudInternalNetwork = microcloudInternalNet
-	cfg.systems[cfg.name] = addingSystem
-
 	installedServices := []types.ServiceType{types.MicroCloud, types.LXD}
 	optionalServices := map[types.ServiceType]string{
 		types.MicroCeph: api.MicroCephDir,
diff --git a/cmd/microcloud/preseed.go b/cmd/microcloud/preseed.go
index 6de299833..575ce7d90 100644
--- a/cmd/microcloud/preseed.go
+++ b/cmd/microcloud/preseed.go
@@ -713,6 +713,24 @@ func (p *Preseed) Parse(s *service.Handler, c *initConfig, installedServices map
 	}
 
 	lxd := s.Services[types.LXD].(*service.LXDService)
+
+	if c.bootstrap {
+		// We need to find the interface for the lookup subnet.
+		microCloudSubnetInterface, err := lxd.FindInterfaceForSubnet(p.LookupSubnet)
+		if err != nil {
+			return nil, err
+		}
+
+		ipLookupSubnet, lookupSubnet, err := net.ParseCIDR(p.LookupSubnet)
+		if err != nil {
+			return nil, err
+		}
+
+		bootstrapSystem := c.systems[s.Name]
+		bootstrapSystem.MicroCloudInternalNetwork = &Network{Interface: *microCloudSubnetInterface, Subnet: lookupSubnet, IP: ipLookupSubnet}
+		c.systems[s.Name] = bootstrapSystem
+	}
+
 	ifaceByPeer := map[string]string{}
 	ovnUnderlayNeeded := false
 	for _, cfg := range p.Systems {