WIP: Simple working client/server

stage1/cmd/server/build.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+go build
+sudo setcap cap_net_admin+iep server

stage1/cmd/server/main.go

@@ -0,0 +1,14 @@
+package main
+
+import (
+	"log"
+	"os"
+	"vppn/stage1"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		log.Fatalf("Usage: %s <addr>", os.Args[0])
+	}
+	stage1.RunServer(os.Args[1])
+}