[client] Retry on tun creation for darwin (#2564)

The interface creation on macOS seems to be asynchronus why the tun.create methode somethimes failes becasue the interface is not ready yet. To work around this issue we introduce a retry on tun.create

iface/iface_create.go

@@ -1,4 +1,4 @@
-//go:build !android
+//go:build (!android && !darwin) || ios
 
 package iface
 

iface/iface_darwin.go

@@ -4,7 +4,9 @@ package iface
 
 import (
 	"fmt"
+	"time"
 
+	"github.com/cenkalti/backoff/v4"
 	"github.com/pion/transport/v3"
 
 	"github.com/netbirdio/netbird/iface/bind"
@@ -36,3 +38,29 @@ func NewWGIFace(iFaceName string, address string, wgPort int, wgPrivKey string,
 func (w *WGIface) CreateOnAndroid([]string, string, []string) error {
 	return fmt.Errorf("this function has not implemented on this platform")
 }
+
+// Create creates a new Wireguard interface, sets a given IP and brings it up.
+// Will reuse an existing one.
+// this function is different on Android
+func (w *WGIface) Create() error {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+
+	backOff := &backoff.ExponentialBackOff{
+		InitialInterval: 20 * time.Millisecond,
+		MaxElapsedTime:  500 * time.Millisecond,
+		Stop:            backoff.Stop,
+		Clock:           backoff.SystemClock,
+	}
+
+	operation := func() error {
+		cfgr, err := w.tun.Create()
+		if err != nil {
+			return err
+		}
+		w.configurer = cfgr
+		return nil
+	}
+
+	return backoff.Retry(operation, backOff)
+}

management/server/peer.go

@@ -550,8 +550,6 @@ func (am *DefaultAccountManager) SyncPeer(ctx context.Context, sync PeerSync, ac
 	}
 
 	if peer.UserID != "" {
-		log.Infof("Peer has no userID")
-
 		user, err := account.FindUser(peer.UserID)
 		if err != nil {
 			return nil, nil, nil, err