同一Proxmox节点下三台主机10.0.0.0/24子网互通异常求助

各位大佬好，我碰到一个网络互通的问题，折腾半天没找到根源，想请大家帮忙分析下：

我在同一台Proxmox节点上部署了3台主机，每台都配了两个网卡接口：

• 第一块网卡都归属10.100.59.0/24子网，默认网关是10.100.59.1
• 第二块网卡都在10.0.0.0/24子网，默认网关同样设为10.100.59.1

现在的问题很奇怪：三台主机在10.100.59.0/24子网下都能正常ping通彼此，但到了10.0.0.0/24子网，只有node1和node2能互通，node3完全没法被另外两台通过这个子网访问——不过用nmap扫10.0.0.0/24子网时，node3的IP是能被扫出来的。

已经排查过的几个关键点：

• 三台主机的防火墙都已经彻底关闭
• 反复检查过IP冲突，确认没有重复的IP

下面是每台主机的netplan配置文件：

node1配置 #

network:
  version: 2
  ethernets:
    ens18:
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.100.59.215/24
      routes:
        - to: default
          via: 10.100.59.1
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
    ens19:
      dhcp4: no
      dhcp6: no
      vlans:
        br-mgmt-vlan:
          id: 10
          link: ens19
        br-storage-vlan:
          id: 20
          link: ens19
        br-vxlan-vlan:
          id: 30
          link: ens19
  bridges:
    br-mgmt:
      dhcp4: no
      dhcp6: no
      interfaces:
        - br-mgmt-vlan
      addresses:
        - 10.0.0.11/24
        - 10.0.0.12/24
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
      parameters:
        forward-delay: 0
        stp: no
    br-vxlan:
      dhcp4: no
      dhcp6: no
      interfaces:
        - br-vxlan-vlan
      addresses:
        - 10.0.0.32/24
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
      parameters:
        forward-delay: 0
        stp: no
    br-storage:
      interfaces:
        - br-storage-vlan
      parameters:
        forward-delay: 0
        stp: no
    br-vlan:
      interfaces:
        - ens19
      parameters:
        forward-delay: 0
        stp: no

node2配置 #

network:
  version: 2
  ethernets:
    ens18:
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.100.59.216/24
      routes:
        - to: default
          via: 10.100.59.1
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
    ens19:
      dhcp4: no
      dhcp6: no
      vlans:
        br-mgmt-vlan:
          id: 10
          link: ens19
        br-storage-vlan:
          id: 20
          link: ens19
        br-vxlan-vlan:
          id: 30
          link: ens19
  bridges:
    br-mgmt:
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.0.0.13/24
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
      interfaces:
        - br-mgmt-vlan
      parameters:
        forward-delay: 0
        stp: no
    br-storage:
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.0.0.23/24
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
      interfaces:
        - br-storage-vlan
      parameters:
        forward-delay: 0
        stp: no
    br-vxlan:
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.0.0.33/24
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
      interfaces:
        - br-vxlan-vlan
      parameters:
        forward-delay: 0
        stp: no
    br-vlan:
      interfaces:
        - ens19
      parameters:
        forward-delay: 0
        stp: no

node3配置 #

network:
  version: 2
  ethernets:
    ens18:
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.100.59.217/24
      routes:
        - to: default
          via: 10.100.59.1
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
    ens19:
      dhcp4: no
      dhcp6: no
      vlans:
        br-mgmt-vlan:
          id: 10
          link: ens19
        br-storage-vlan:
          id: 20
          link: ens19
        br-vxlan-vlan:
          id: 30
          link: ens19
  bridges:
    br-mgmt:
      interfaces:
        - br-mgmt-vlan
      parameters:
        forward-delay: 0
        stp: no
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.0.0.14/24
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
    br-storage:
      interfaces:
        - br-storage-vlan
      parameters:
        forward-delay: 0
        stp: no
      dhcp4: no
      dhcp6: no
      addresses:
        - 10.0.0.24/24
      nameservers:
        addresses:
          - 195.130.90.35
          - 195.130.90.45
    br-vlan:
      interfaces:
        - ens19
      parameters:
        forward-delay: 0
        stp: no
    br-vxlan:
      interfaces:
        - br-vxlan-vlan
      parameters:
        forward-delay: 0
        stp: no

目前的状态是node1和node2不管用哪个子网都能正常通信，但node3只能在10.100.59.0/24子网和另外两台互通，10.0.0.0/24子网下完全连不上，实在摸不着头绪了，求各位帮忙排查！

备注：内容来源于stack exchange，提问作者Losraio