diff --git a/internal/api/v1/helpers.go b/internal/api/v1/helpers.go
index 581d61c..ec0ad14 100644
--- a/internal/api/v1/helpers.go
+++ b/internal/api/v1/helpers.go
@@ -41,9 +41,10 @@ func (api *API) reconcileNetworking() {
 		switch svc.Backend.Type {
 		case services.BackendTCPPassthrough:
 			instanceRoutes = append(instanceRoutes, haproxy.InstanceRoute{
-				Name:      svc.Domain,
-				Domain:    svc.Domain,
-				BackendIP: extractHost(svc.Backend.Address),
+				Name:       svc.Domain,
+				Domain:     svc.Domain,
+				BackendIP:  extractHost(svc.Backend.Address),
+				Subdomains: svc.Subdomains,
 			})
 		case services.BackendHTTP:
 			httpRoutes = append(httpRoutes, haproxy.HTTPRoute{