☰

18.04 版中的 KVM 桥接网络

tag-icon • tag-icon networking 18.04 kvm-virtualization network-bridge
18.04 版中的 KVM 桥接网络

我正在尝试为 KVM 客户机设置桥接网络。我的客户机操作系统 (Windows 10) 设置为使用 br0，但没有网络连接。我的主机通过 DHCP 获取其 IP 地址（路由器始终为其提供相同的保留 IP）。我希望我的 VM 客户机也通过 DHCP 获取 IP 地址。我做错了什么？我在网上找到的说明对我没有帮助，因为它们没有说明它们假设我正在使用哪些网络子系统，而且网络似乎由 NetworkManager、networkd、netplan 和/或 /etc/network/interfaces 的某种组合管理，其中许多是不兼容且相互冲突的。

以下是一些细节：（我添加了 br0。安装 virtlib 时必须添加 virbr0 和 virbr0-nic）

vmhost:#
vmhost:# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.1 LTS
Release:    18.04
Codename:   bionic
vmhost:#
vmhost:# ip a
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: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc fq_codel state UP group default qlen 1000
    link/ether 3c:52:82:62:df:a8 brd ff:ff:ff:ff:ff:ff
    inet 192.170.20.80/24 brd 192.170.20.255 scope global dynamic noprefixroute eno1
       valid_lft 85298sec preferred_lft 85298sec
    inet6 fe80::2093:3ece:58e4:26cd/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:18:91:70 brd ff:ff:ff:ff:ff:ff
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:18:91:70 brd ff:ff:ff:ff:ff:ff
10: br0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether da:f0:24:4f:23:85 brd ff:ff:ff:ff:ff:ff
vmhost:#
vmhost:# cat /etc/network/interfaces 
# ifupdown has been replaced by netplan(5) on this system.  See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
#    sudo apt install ifupdown
vmhost:#
vmhost:# cat /etc/netplan/vmhost.yaml 
network:
  version: 2
  renderer: NetworkManager
  ethernets:
    eno1:
      dhcp4: no
      dhcp6: no
  bridges:
    br0:
      dhcp4: yes
      dhcp6: no
      interfaces: [ eno1 ]
      accept-ra: no
vmhost:#
vmhost:#

相关内容