1、配置/etc/network/interfaces

參考官方文檔地址https://pve.proxmox.com/wiki/Network_Configuration

## 真實(shí)ip
auto eno1
iface eno1 inet static
        address 192.168.1.196/24
        gateway 192.168.1.204

## 通過bridge 分配給虛擬機(jī)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、配置虛擬機(jī)的ip（我這邊是ubuntu20）

執(zhí)行nano /etc/netplan/00-installer-config.yaml，在這個(gè)文件中配置具體ip

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

重啟網(wǎng)卡執(zhí)行 netplan apply