diff --git a/proxy/socks/simplified/config.pb.go b/proxy/socks/simplified/config.pb.go
index 1f3144327..06a5e964f 100644
--- a/proxy/socks/simplified/config.pb.go
+++ b/proxy/socks/simplified/config.pb.go
@@ -7,8 +7,9 @@
 package simplified
 
 import (
-	net "github.com/v2fly/v2ray-core/v5/common/net"
-	_ "github.com/v2fly/v2ray-core/v5/common/protoext"
+	net "github.com/v2fly/v2ray-core/v4/common/net"
+	packetaddr "github.com/v2fly/v2ray-core/v4/common/net/packetaddr"
+	_ "github.com/v2fly/v2ray-core/v4/common/protoext"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -27,8 +28,9 @@ type ServerConfig struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Address    *net.IPOrDomain `protobuf:"bytes,3,opt,name=address,proto3" json:"address,omitempty"`
-	UdpEnabled bool            `protobuf:"varint,4,opt,name=udp_enabled,json=udpEnabled,proto3" json:"udp_enabled,omitempty"`
+	Address        *net.IPOrDomain           `protobuf:"bytes,3,opt,name=address,proto3" json:"address,omitempty"`
+	UdpEnabled     bool                      `protobuf:"varint,4,opt,name=udp_enabled,json=udpEnabled,proto3" json:"udp_enabled,omitempty"`
+	PacketEncoding packetaddr.PacketAddrType `protobuf:"varint,7,opt,name=packet_encoding,json=packetEncoding,proto3,enum=v2ray.core.net.packetaddr.PacketAddrType" json:"packet_encoding,omitempty"`
 }
 
 func (x *ServerConfig) Reset() {
@@ -77,6 +79,13 @@ func (x *ServerConfig) GetUdpEnabled() bool {
 	return false
 }
 
+func (x *ServerConfig) GetPacketEncoding() packetaddr.PacketAddrType {
+	if x != nil {
+		return x.PacketEncoding
+	}
+	return packetaddr.PacketAddrType(0)
+}
+
 type ClientConfig struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -143,32 +152,39 @@ var file_proxy_socks_simplified_config_proto_rawDesc = []byte{
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 }
 
 var (
@@ -185,18 +201,20 @@ func file_proxy_socks_simplified_config_proto_rawDescGZIP() []byte {
 
 var file_proxy_socks_simplified_config_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_proxy_socks_simplified_config_proto_goTypes = []interface{}{
-	(*ServerConfig)(nil),   // 0: v2ray.core.proxy.socks.simplified.ServerConfig
-	(*ClientConfig)(nil),   // 1: v2ray.core.proxy.socks.simplified.ClientConfig
-	(*net.IPOrDomain)(nil), // 2: v2ray.core.common.net.IPOrDomain
+	(*ServerConfig)(nil),           // 0: v2ray.core.proxy.socks.simplified.ServerConfig
+	(*ClientConfig)(nil),           // 1: v2ray.core.proxy.socks.simplified.ClientConfig
+	(*net.IPOrDomain)(nil),         // 2: v2ray.core.common.net.IPOrDomain
+	(packetaddr.PacketAddrType)(0), // 3: v2ray.core.net.packetaddr.PacketAddrType
 }
 var file_proxy_socks_simplified_config_proto_depIdxs = []int32{
 	2, // 0: v2ray.core.proxy.socks.simplified.ServerConfig.address:type_name -> v2ray.core.common.net.IPOrDomain
-	2, // 1: v2ray.core.proxy.socks.simplified.ClientConfig.address:type_name -> v2ray.core.common.net.IPOrDomain
-	2, // [2:2] is the sub-list for method output_type
-	2, // [2:2] is the sub-list for method input_type
-	2, // [2:2] is the sub-list for extension type_name
-	2, // [2:2] is the sub-list for extension extendee
-	0, // [0:2] is the sub-list for field type_name
+	3, // 1: v2ray.core.proxy.socks.simplified.ServerConfig.packet_encoding:type_name -> v2ray.core.net.packetaddr.PacketAddrType
+	2, // 2: v2ray.core.proxy.socks.simplified.ClientConfig.address:type_name -> v2ray.core.common.net.IPOrDomain
+	3, // [3:3] is the sub-list for method output_type
+	3, // [3:3] is the sub-list for method input_type
+	3, // [3:3] is the sub-list for extension type_name
+	3, // [3:3] is the sub-list for extension extendee
+	0, // [0:3] is the sub-list for field type_name
 }
 
 func init() { file_proxy_socks_simplified_config_proto_init() }