设置 mlvpn 环境时出错 - 隧道启动时遇到问题

Question

陣容隧道两侧均无法通行。每次都出现设备或资源繁忙错误。

配置如下：

• 这是客户端的文件mlvpn.conf：

  [general]
  statuscommand = "/etc/mlvpn/mlvpn0_updown.sh"
  tuntap = "tun"
  mode = "client"
  interface_name = "mlvpn0"
  timeout = 30
  password = "you have not changed me yet?"
  reorder_buffer_size = 64
  loss_tolerence = 50
  
  [filters]
  
  [adsl1]
  bindhost = "172.20.10.22"
  remotehost = "server ip"
  remoteport = 5080
  
  [adsl2]
  bindhost = "192.168.42.130"
  remotehost = "server_ip"
  remoteport = 5081
  

• 这是 updown 脚本：

  #!/bin/bash
  error=0; trap "error=$((error|1))" ERR
  
  tuntap_intf="$1"
  newstatus="$2"
  rtun="$3"
  
  [ -z "$newstatus" ] && exit 1
  
  (
  if [ "$newstatus" = "tuntap_up" ]; then
      echo "$tuntap_intf setup"
      /sbin/ip link set dev $tuntap_intf mtu 1400 up
      /sbin/route add proof.ovh.net dev $tuntap_intf
  elif [ "$newstatus" = "tuntap_down" ]; then
      echo "$tuntap_intf shutdown"
      /sbin/route del proof.ovh.net dev $tuntap_intf
  elif [ "$newstatus" = "rtun_up" ]; then
      echo "rtun [${rtun}] is up"
  elif [ "$newstatus" = "rtun_down" ]; then
      echo "rtun [${rtun}] is down"
  fi
  ) >> /var/log/mlvpn_commands.log 2>&1
  
  exit $errors
  

这些是我的错误：

    mlvpn0:tun or device or resource busy.