diff --git a/outbound/wireguard.go b/outbound/wireguard.go
index 045241ff..8b19fb5b 100644
--- a/outbound/wireguard.go
+++ b/outbound/wireguard.go
@@ -19,6 +19,7 @@ import (
 	"github.com/sagernet/sing-box/transport/wireguard"
 	"github.com/sagernet/sing-dns"
 	"github.com/sagernet/sing-tun"
+	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
@@ -111,6 +112,25 @@ func NewWireGuard(ctx context.Context, router adapter.Router, logger log.Context
 }
 
 func (w *WireGuard) Start() error {
+	if common.Any(w.peers, func(peer wireguard.PeerConfig) bool {
+		return !peer.Endpoint.IsValid()
+	}) {
+		// wait for all outbounds to be started and continue in PortStart
+		return nil
+	}
+	return w.start()
+}
+
+func (w *WireGuard) PortStart() error {
+	if common.All(w.peers, func(peer wireguard.PeerConfig) bool {
+		return peer.Endpoint.IsValid()
+	}) {
+		return nil
+	}
+	return w.start()
+}
+
+func (w *WireGuard) start() error {
 	err := wireguard.ResolvePeers(w.ctx, w.router, w.peers)
 	if err != nil {
 		return err