diff --git a/bytes/bytes.go b/bytes/bytes.go
index 0fd4f42..7b174dc 100644
--- a/bytes/bytes.go
+++ b/bytes/bytes.go
@@ -7,6 +7,14 @@ import (
 	"github.com/pyihe/go-pkg/errors"
 )
 
+func Copy(src []byte) (b []byte) {
+	if len(src) > 0 {
+		b = make([]byte, len(src))
+		copy(b, src)
+	}
+	return
+}
+
 func Int64(b []byte) (v int64, err error) {
 	if len(b) == 0 {
 		return
diff --git a/logs/log_zap.go b/logs/log_zap.go
index cf0ba41..59fb16a 100644
--- a/logs/log_zap.go
+++ b/logs/log_zap.go
@@ -57,7 +57,7 @@ func newZapLogger(opts ...LogOption) (Logger, error) {
 
 	encoder := getJSONEncoder()
 
-	op := zap.Fields(zap.String("ip", nets.GetLocalIP()), zap.String("app", zlogger.name))
+	op := zap.Fields(zap.String("ip", nets.LocalIP()), zap.String("app", zlogger.name))
 	options = append(options, op)
 
 	allLevel := zap.LevelEnablerFunc(func(lv zapcore.Level) bool {