PVE修改网络配置报错需要ifupdown2

PVE修改网络配置报错需要ifupdown2
https://blog.whsir.com/post-5618.html?ivk_sa=1024320u

Proxmox 安装ifupdown2
直接这样安装会出问题，原因是使用了proxmox企业版的订阅源
apt install ifupdown2

rm /etc/apt/sources.list.d/pve-enterprise.list
echo  'deb http://download.proxmox.com/debian/pve buster pve-no-subscription' >>  /etc/apt/sources.list.d/pve-no-subscription.list
apt update
apt install ifupdown2