diff --git a/cloud/services/container/clusters/reconcile.go b/cloud/services/container/clusters/reconcile.go
index 2c94b35c6..3d37e6da7 100644
--- a/cloud/services/container/clusters/reconcile.go
+++ b/cloud/services/container/clusters/reconcile.go
@@ -281,6 +281,8 @@ func (s *Service) createCluster(ctx context.Context, log *logr.Logger) error {
 		if cn.UseIPAliases {
 			cluster.IpAllocationPolicy = &containerpb.IPAllocationPolicy{}
 			cluster.IpAllocationPolicy.UseIpAliases = cn.UseIPAliases
+			cluster.IpAllocationPolicy.ClusterIpv4CidrBlock = cn.Pod.CidrBlock
+			cluster.IpAllocationPolicy.ServicesIpv4CidrBlock = cn.Service.CidrBlock
 		}
 		if cn.PrivateCluster != nil {
 			cluster.PrivateClusterConfig = &containerpb.PrivateClusterConfig{}