将 Proxmox 主机的附加 IP 路由到 Ubuntu 客户机

Question

我在 Hetzner 服务器上有一个带有 Proxmox 的附加 IP，我想将其路由到 Ubuntu 客户机

这是我在主机和客户机上的网络配置

我的客户机是 Ubuntu 18.04

配置不起作用

我的 PVE 主机网络配置：

# network interface settings; autogenerated

# Please do NOT modify this file directly, unless you know what

# you're doing.

#

# If you want to manage parts of the network configuration manually,

# please utilize the 'source' or 'source-directory' directives to do

# so.

# PVE will preserve these directives, but will NOT read its network

# configuration from sourced files, so do not attempt to move any of

# the PVE managed interfaces into external files!



source /etc/network/interfaces.d/*



auto lo

iface lo inet loopback



auto enp0s31f6

iface enp0s31f6 inet static

        address  77.77.77.241

        netmask  255.255.255.192

        gateway  77.77.77.193

        pointopoint 77.77.77.193

        up route add -net 77.77.77.192 netmask 255.255.255.192 gw 77.77.77.193 dev enp0s31f6

        post-up echo 1 > /proc/sys/net/ipv4/conf/enp0s31f6/proxy_arp

# route 77.77.77.192/26 via 77.77.77.193



auto vmbr0

iface vmbr0 inet static

  address 77.77.77.241

  netmask 255.255.255.192

  bridge_ports none

  bridge_stp off

  bridge_fd 0

  bridge_maxwait 0

  up route add -host 77.77.77.242 dev vmbr0

我的 Ubuntu VM 网络配置：

# This file is generated from information provided by

# the datasource.  Changes to it will not persist across an instance.

# To disable cloud-init's network configuration capabilities, write a file

# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:

# network: {config: disabled}

network:

    version: 2

    renderer: networkd

    ethernets:

        ens18:

            addresses:

            - 77.77.77.242/26

            dhcp4: no

            dhcp6: no

            gateway4: 77.77.77.193

            routes:

            - to: 0.0.0.0/0

              via: 77.77.77.193

              on-link: true

            nameservers:

                addresses:

                - 8.8.8.8

                - 4.2.2.4

我还创建了一个名为 /etc/sysctl.d/99-networking.conf 的文件并插入以下内容

net.ipv4.ip_forward=1
net.ipv4.conf.enp0s31f6.send_redirects=0
net.ipv6.conf.all.forwarding=1

我无法使用桥接模式，因为 Hetzner 不允许在同一个外部 IP 上使用多个 MAC，所以我必须使用路由模式