diff --git a/infra/conf/wireguard.go b/infra/conf/wireguard.go
index c4dec367..6b102b14 100644
--- a/infra/conf/wireguard.go
+++ b/infra/conf/wireguard.go
@@ -52,6 +52,7 @@ type WireGuardConfig struct {
 	Peers      []*WireGuardPeerConfig `json:"peers"`
 	MTU        int                    `json:"mtu"`
 	NumWorkers int                    `json:"workers"`
+	Reserved   []byte                 `json:"reserved"`
 }
 
 func (c *WireGuardConfig) Build() (proto.Message, error) {
@@ -90,6 +91,11 @@ func (c *WireGuardConfig) Build() (proto.Message, error) {
 	// we don't need to process fallback manually
 	config.NumWorkers = int32(c.NumWorkers)
 
+	if len(c.Reserved) != 0 && len(c.Reserved) != 3 {
+		return nil, newError(`"reserved" should be empty or 3 bytes`)
+	}
+	config.Reserved = c.Reserved
+
 	return config, nil
 }
 
diff --git a/proxy/wireguard/bind.go b/proxy/wireguard/bind.go
index 1136f5ed..a90a9703 100644
--- a/proxy/wireguard/bind.go
+++ b/proxy/wireguard/bind.go
@@ -31,6 +31,7 @@ type netBindClient struct {
 	dialer    internet.Dialer
 	dns       dns.Client
 	dnsOption dns.IPOption
+	reserved  []byte
 
 	readQueue chan *netReadInfo
 }
@@ -157,6 +158,10 @@ func (bind *netBindClient) Send(buff []byte, endpoint conn.Endpoint) error {
 		}
 	}
 
+	if len(buff) > 3 && len(bind.reserved) == 3 {
+		copy(buff[1:], bind.reserved)
+	}
+
 	_, err = nend.conn.Write(buff)
 
 	return err
diff --git a/proxy/wireguard/config.pb.go b/proxy/wireguard/config.pb.go
index e290af8a..75d5787b 100644
--- a/proxy/wireguard/config.pb.go
+++ b/proxy/wireguard/config.pb.go
@@ -109,6 +109,7 @@ type DeviceConfig struct {
 	Peers      []*PeerConfig `protobuf:"bytes,3,rep,name=peers,proto3" json:"peers,omitempty"`
 	Mtu        int32         `protobuf:"varint,4,opt,name=mtu,proto3" json:"mtu,omitempty"`
 	NumWorkers int32         `protobuf:"varint,5,opt,name=num_workers,json=numWorkers,proto3" json:"num_workers,omitempty"`
+	Reserved   []byte        `protobuf:"bytes,6,opt,name=reserved,proto3" json:"reserved,omitempty"`
 }
 
 func (x *DeviceConfig) Reset() {
@@ -178,6 +179,13 @@ func (x *DeviceConfig) GetNumWorkers() int32 {
 	return 0
 }
 
+func (x *DeviceConfig) GetReserved() []byte {
+	if x != nil {
+		return x.Reserved
+	}
+	return nil
+}
+
 var File_proxy_wireguard_config_proto protoreflect.FileDescriptor
 
 var file_proxy_wireguard_config_proto_rawDesc = []byte{
@@ -195,7 +203,7 @@ var file_proxy_wireguard_config_proto_rawDesc = []byte{
 	0x76, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x05, 0x52, 0x09, 0x6b, 0x65, 0x65, 0x70, 0x41, 0x6c,
 	0x69, 0x76, 0x65, 0x12, 0x1f, 0x0a, 0x0b, 0x61, 0x6c, 0x6c, 0x6f, 0x77, 0x65, 0x64, 0x5f, 0x69,
 	0x70, 0x73, 0x18, 0x05, 0x20, 0x03, 0x28, 0x09, 0x52, 0x0a, 0x61, 0x6c, 0x6c, 0x6f, 0x77, 0x65,
-	0x64, 0x49, 0x70, 0x73, 0x22, 0xb4, 0x01, 0x0a, 0x0c, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65, 0x43,
+	0x64, 0x49, 0x70, 0x73, 0x22, 0xd0, 0x01, 0x0a, 0x0c, 0x44, 0x65, 0x76, 0x69, 0x63, 0x65, 0x43,
 	0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x1d, 0x0a, 0x0a, 0x73, 0x65, 0x63, 0x72, 0x65, 0x74, 0x5f,
 	0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x73, 0x65, 0x63, 0x72, 0x65,
 	0x74, 0x4b, 0x65, 0x79, 0x12, 0x1a, 0x0a, 0x08, 0x65, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74,
@@ -206,14 +214,15 @@ var file_proxy_wireguard_config_proto_rawDesc = []byte{
 	0x67, 0x52, 0x05, 0x70, 0x65, 0x65, 0x72, 0x73, 0x12, 0x10, 0x0a, 0x03, 0x6d, 0x74, 0x75, 0x18,
 	0x04, 0x20, 0x01, 0x28, 0x05, 0x52, 0x03, 0x6d, 0x74, 0x75, 0x12, 0x1f, 0x0a, 0x0b, 0x6e, 0x75,
 	0x6d, 0x5f, 0x77, 0x6f, 0x72, 0x6b, 0x65, 0x72, 0x73, 0x18, 0x05, 0x20, 0x01, 0x28, 0x05, 0x52,
-	0x0a, 0x6e, 0x75, 0x6d, 0x57, 0x6f, 0x72, 0x6b, 0x65, 0x72, 0x73, 0x42, 0x5e, 0x0a, 0x18, 0x63,
-	0x6f, 0x6d, 0x2e, 0x78, 0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x77, 0x69,
-	0x72, 0x65, 0x67, 0x75, 0x61, 0x72, 0x64, 0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74, 0x68, 0x75,
-	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d,
-	0x63, 0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x77, 0x69, 0x72, 0x65, 0x67,
-	0x75, 0x61, 0x72, 0x64, 0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78,
-	0x79, 0x2e, 0x57, 0x69, 0x72, 0x65, 0x47, 0x75, 0x61, 0x72, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x33,
+	0x0a, 0x6e, 0x75, 0x6d, 0x57, 0x6f, 0x72, 0x6b, 0x65, 0x72, 0x73, 0x12, 0x1a, 0x0a, 0x08, 0x72,
+	0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x64, 0x18, 0x06, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x08, 0x72,
+	0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x64, 0x42, 0x5e, 0x0a, 0x18, 0x63, 0x6f, 0x6d, 0x2e, 0x78,
+	0x72, 0x61, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x77, 0x69, 0x72, 0x65, 0x67, 0x75,
+	0x61, 0x72, 0x64, 0x50, 0x01, 0x5a, 0x29, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
+	0x6d, 0x2f, 0x78, 0x74, 0x6c, 0x73, 0x2f, 0x78, 0x72, 0x61, 0x79, 0x2d, 0x63, 0x6f, 0x72, 0x65,
+	0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x77, 0x69, 0x72, 0x65, 0x67, 0x75, 0x61, 0x72, 0x64,
+	0xaa, 0x02, 0x14, 0x58, 0x72, 0x61, 0x79, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x57, 0x69,
+	0x72, 0x65, 0x47, 0x75, 0x61, 0x72, 0x64, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/proxy/wireguard/config.proto b/proxy/wireguard/config.proto
index dde3b41b..810a1126 100644
--- a/proxy/wireguard/config.proto
+++ b/proxy/wireguard/config.proto
@@ -20,4 +20,5 @@ message DeviceConfig {
     repeated PeerConfig peers = 3;
     int32 mtu = 4;
     int32 num_workers = 5;
+    bytes reserved = 6;
 }
\ No newline at end of file
diff --git a/proxy/wireguard/wireguard.go b/proxy/wireguard/wireguard.go
index 51cee876..2b7e1c87 100644
--- a/proxy/wireguard/wireguard.go
+++ b/proxy/wireguard/wireguard.go
@@ -82,9 +82,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
 		})
 		// bind := conn.NewStdNetBind() // TODO: conn.Bind wrapper for dialer
 		bind := &netBindClient{
-			dialer:  dialer,
-			workers: int(h.conf.NumWorkers),
-			dns:     h.dns,
+			dialer:   dialer,
+			workers:  int(h.conf.NumWorkers),
+			dns:      h.dns,
+			reserved: h.conf.Reserved,
 		}
 
 		net, err := h.makeVirtualTun(bind)