Update

vendor/github.com/mdlayher/netlink/debug_others.go

@@ -0,0 +1,40 @@
+//go:build !linux
+
+package netlink
+
+import (
+	"log"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// newDebugger creates a debugger by parsing key=value arguments.
+func newDebugger(args []string) *debugger {
+	d := &debugger{
+		Log:   log.New(os.Stderr, "nl: ", 0),
+		Level: 1,
+	}
+	for _, a := range args {
+		kv := strings.Split(a, "=")
+		if len(kv) != 2 {
+			continue
+		}
+		switch kv[0] {
+		case "level":
+			level, err := strconv.Atoi(kv[1])
+			if err != nil {
+				panicf("netlink: invalid NLDEBUG level: %q", a)
+			}
+			d.Level = level
+		}
+	}
+	return d
+}
+
+// debugf prints debugging information at the specified level, if d.Level is high enough to print the message.
+func (d *debugger) debugf(level int, format string, v ...interface{}) {
+	if d.Level >= level {
+		d.Log.Printf(format, v...)
+	}
+}