ubuntu18.04虚拟网卡配置

比较懒的方法，就是开机自启服务添加创建虚拟网卡命令

第一步：修改ubuntu的rc.local启动项

#vim /lib/systemd/system/rc.local.service

#  SPDX-License-Identifier: LGPL-2.1+
# 
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

# This unit gets pulled automatically into multi-user.target by
# systemd-rc-local-generator if /etc/rc.local is executable.
[Unit]
Description=/etc/rc.local Compatibility
Documentation=man:systemd-rc-local-generator(8)
ConditionFileIsExecutable=/etc/rc.local
After=network.target

[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=yes
GuessMainPID=no
#####添加如下内容
[Install]
WantedBy=multi-user.target
Alias=rc-local.service

第二步，创建rc.local文件