pve 一个ip转个其下虚拟机ip

1、配置/etc/network/interfaces

参考官方文档地址https://pve.proxmox.com/wiki/Network_Configuration

## 真实ip
auto eno1
iface eno1 inet static
        address 192.168.1.196/24
        gateway 192.168.1.204

## 通过bridge 分配给虚拟机的子ip
auto vmbr0
iface vmbr0 inet static
        address 192.168.2.1/24
        bridge-ports none
        bridge-stp off
        bridge-fd 0
        post-up echo 1 > /proc/sys/net/ipv4/ip_forward
        post-up iptables -t nat -A POSTROUTING -s '192.168.2.0/24' -o eno1 -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s '192.168.2.0/24' -o eno1 -j MASQUERADE
        post-up iptables -t raw -I PREROUTING -i fwbr+ -j CT --zone 1
        post-down iptables -t raw -D PREROUTING -i fwbr+ -j CT --zone 1

2、配置虚拟机的ip（我这边是ubuntu20）

执行nano /etc/netplan/00-installer-config.yaml，在这个文件中配置具体ip

network:
  ethernets:
    ens18:
      addresses:
        - 192.168.2.100/24
      gateway4: 192.168.2.1
      nameservers:
        addresses:
          - 8.8.8.8

重启网卡执行 netplan apply