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Linux 版本

tag-icon • tag-icon networking server virtualization ethernet kvm-virtualization
Linux 版本

Linux 版本

“Ubuntu 20.04.4 LTS（GNU/Linux 5.4.0-122-通用 x86_64）”

KVM 版本

软件包：qemu-system-x86
版本：1:4.2-3ubuntu6.23
优先级：可选
部分：杂项
来源：qemu
起源：Ubuntu

主机上的网络配置

network:  
  version: 2  
  renderer: networkd  
  
  ethernets:  
    enp0s31f6:  
      dhcp4: false  
      dhcp6: false  
  bridges:  
    br0:  
      interfaces: [enp0s31f6]  
      addresses: [x.x.28.243/32]  
      routes:  
        - on-link: true  
          to: 0.0.0.0/0  
          via: x.x.28.193  
      gateway6: fe80::1  
      parameters:  
        stp: false  
        forward-delay: 0  
      dhcp4: no  
      dhcp6: no  
  version: 2

主机上的 IP 添加

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00  
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br0 state UP group default qlen 1000
    link/ether 90:1b:0e:fa:70:6d brd ff:ff:ff:ff:ff:ff
3: enp0s31f6.4002@enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 90:1b:0e:fa:70:6d brd ff:ff:ff:ff:ff:ff
    inet 192.168.9.209/24 brd 192.168.9.255 scope global noprefixroute enp0s31f6.4002
       valid_lft forever preferred_lft forever
    inet6 fe80::9477:6a8c:e1b6:b3a7/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
4: virbr2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
    inet 192.168.110.1/24 brd 192.168.110.255 scope global noprefixroute virbr2
       valid_lft forever preferred_lft forever
    inet6 fe80::40ca:cfff:fe2e:76c2/64 scope link
       valid_lft forever preferred_lft forever
5: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 02:c5:79:5e:ef:c5 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global noprefixroute virbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::c5:79ff:fe5e:efc5/64 scope link
       valid_lft forever preferred_lft forever
6: virbr1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:4a:eb:65 brd ff:ff:ff:ff:ff:ff
    inet 192.168.100.1/24 brd 192.168.100.255 scope global virbr1
       valid_lft forever preferred_lft forever
7: virbr1-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr1 state DOWN group default qlen 1000
    link/ether 52:54:00:4a:eb:65 brd ff:ff:ff:ff:ff:ff
10: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 90:1b:0e:fa:70:6d brd ff:ff:ff:ff:ff:ff
    inet x.x.28.243/32 scope global br0
       valid_lft forever preferred_lft forever
    inet6 fe80::3087:19ff:fe98:e699/64 scope link
       valid_lft forever preferred_lft forever
11: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br0 state UNKNOWN group default qlen 1000
    link/ether fe:54:00:02:37:3b brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc54:ff:fe02:373b/64 scope link
       valid_lft forever preferred_lft forever

KVM虚拟机

IP 地址 xx28.247/26
网关 xx28.193

VM 只能 ping 通自己的 IP（xx28.247），但无法 ping 通主机 IP（xx28.193）及其网关（xx28.193）。另一方面，主机可以 ping 通网关 ip（xx28.193），但不能 ping 通 VM IP（xx28.247）。

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