Help message clarified

README.md

@@ -38,19 +38,19 @@ Usage of ./proxy:
   -log int
         allowed: 5 (debug), 4 (info), 3 (warning), 2 (error), 1 (fatal) (default 4)
   -logfile string
-        Location to write output to
+        Location to write output to (optional)
   -newip string
-        IP after change
+        Force IP after change (optional)
   -newmac string
-        MAC after change
+        Force MAC after change (optional)
   -oldip string
-        IP before change
+        Force IP before change (optional)
   -oldmac string
-        MAC before change
+        Force MAC before change (optional)
   -passthrough
         Whether to pass every traffic through
   -pidfile string
-        Location to write the pid to
+        Location to write the pid to (optional)
   -smain string
         Main switch sock path, - for stdin/out (default "/run/vde/sw_main.sock")
   -sproxy string

proxy/main.go

@@ -53,15 +53,15 @@ var UId string
 func main() {
 	// Get command line arguments
 	logLvl := flag.Int("log", 4, "allowed: 5 (debug), 4 (info), 3 (warning), 2 (error), 1 (fatal)")
-	oldIP := flag.String("oldip", "", "IP before change")
-	newIP := flag.String("newip", "", "IP after change")
-	oldMAC := flag.String("oldmac", "", "MAC before change")
-	newMAC := flag.String("newmac", "", "MAC after change")
+	oldIP := flag.String("oldip", "", "Force IP before change (optional)")
+	newIP := flag.String("newip", "", "Force IP after change (optional)")
+	oldMAC := flag.String("oldmac", "", "Force MAC before change (optional)")
+	newMAC := flag.String("newmac", "", "Force MAC after change (optional)")
 	passthrough := flag.Bool("passthrough", false, "Whether to pass every traffic through")
 	sockMain := flag.String("smain", "/run/vde/sw_main.sock", "Main switch sock path, - for stdin/out")
 	sockProxy := flag.String("sproxy", "/run/vde/sw_proxy1.sock", "Proxy switch sock path")
-	pidFile := flag.String("pidfile", "", "Location to write the pid to")
-	logFile := flag.String("logfile", "", "Location to write output to")
+	pidFile := flag.String("pidfile", "", "Location to write the pid to (optional)")
+	logFile := flag.String("logfile", "", "Location to write output to (optional)")
 	wireshark := flag.Bool("wireshark", false, "Whether to write all traffic to /tmp")
 	hostname := flag.String("hostname", "", "Set a windows hostname to filter for in binary payloads")
 	flag.Parse()