我在 Windows Hyper-V 主机上的虚拟机中安装了 Ubuntu Server 20.04。
我希望它从本地网络中的 Windows DHCP 服务器获取 IP 地址，但它不起作用，我不知道为什么。具有相同配置的 Windows 虚拟机运行正常。
ip a输出：
1: lo: <L00PBACK,UP,L0WER_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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:15:5d:00:28:18 brd ff:ff:ff:ff:ff:ff
inet6 fe80::215:5dff:fe00:2818/64 scope link
valid.lft forever preferred.lft forever
内容/etc/netplan/00-installer-config.yaml：
network:
ethernets:
eth0:
dhcp4: true
version: 2
输出sudo netplan --debug generate
DEBUG:command generate: running ['/lib/netplan/generate']
** (generate:1818): DEBUG: 12:50:00.358: Processing input file /etc/netplan/00-installer-config.yaml..
** (generate:1818): DEBUG: 12:50:00.359: starting new processing pass
** (generate:1818): DEBUG: 12:50:00.360: We have some netdefs, pass them through a final round of validation
** (generate:1818): DEBUG: 12:50:00.360: eth0: setting default backend to 1
** (generate:1818): DEBUG: 12:50:00.361: Configuration is valid
** (generate:1818): DEBUG: 12:50:00.361: Generating output files..
** (generate:1818): DEBUG: 12:50:00.362: openvswitch: definition eth0 is not for us (backend 1)
** (generate:1818): DEBUG: 12:50:00.363: NetworkManager: definition eth0 is not for us (backend 1)
(generate:1818): GLib-DEBUG: 12:50:00.363: posix_spawn avoided (fd close requested)
(generate:1818): GLib-DEBUG: 12:50:00.365: posix_spawn avoided (fd close requested)
输出sudo netplan --debug apply
** (generate:1826): DEBUG: 12:53:09.513: Processing input file /etc/netplan/00-installer-config.yaml..
** (generate:1826): DEBUG: 12:53:09.514: starting new processing pass
** (generate:1826): DEBUG: 12:53:09.515: He have some netdefs, pass them through a final round of validation
** (generate:1826): DEBUG: 12:53:09.516: eth0: setting default backend to 1
** (generate:1826): DEBUG: 12:53:09.517: Configuration is valid
** (generate:1826): DEBUG: 12:53:09.518: Generating output files..
** (generate:1826): DEBUG: 12:53:09.519: openvswitch: definition eth0 is not for us (backend 1)
** (generate:1826): DEBUG: 12:53:09.520: NetworkManager: definition eth0 is not for us (backend 1)
(generate:1826): GLib-DEBUG: 12:53:09.521: posix_spawn avoided (fd close requested)
(generate:1826): GLib-DEBUG: 12:53:09.523: posix_spawn avoided (fd close requested)
DEBUG:netplan generated networkd configuration changed, restarting networkd
DEBUG:eth0 not found in {}
DEBUG:Merged config:
network:
ethernets:
eth0:
dhcp4: true
version: 2
DEBUG:no netplan generated NM configuration exists
DEBUG:eth0 not found in {}
DEBUG:Merged config:
network:
ethernets:
eth0:
dhcp4: true
version: 2
DEBUG:Link changes: {}
DEBUG:netplan triggering .link rules for lo
DEBUG:netplan triggering .link rules for eth0
DEBUG:eth0 not found in {}
DEBUG:Merged config:
network:
ethernets:
eth0:
dhcp4: true
version: 2
cat /etc/network/interfaces输出
cat: /etc/network/interfaces/: No such file or directory
ls -al /etc/netplan 输出
total 12
drwxr-xr-x 2 root root 4096 Nov 26 14:01
drwxr-xr-x 106 root root 4096 Nov 25 16:45
-rw-r--r-— 1 root root 115 Nov 26 14:01 00-installer-config.yaml
cat /etc/netplan/*.yaml输出
# This is the network config written by 'subiquity'
network:
ethernets:
eth0:
dhcp4: true
version: 2
sudo lshw -C network输出
[77792.441265] blk_update_request: I/O error, dev sr0, sector 0 op 0x0: (READ) flags 0x80700 phys_seg 4 prio class 0
[77792.442325] blk_update_request: I/O error, dev sr0, sector 0 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.443250] Buffer I/O error on dev sr0, logical block 0, async page read
[77792.444154] blk_update_request: I/O error, dev sr0, sector 1 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.445145] Buffer I/O error on dev sr0, logical block 1, async page read
[77792.446145] blk_update_request: I/O error, dev sr0, sector 2 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.447102] Buffer I/O error on dev sr0, logical block 2, async page read
[77792.448088] blk_update_request: I/O error, dev sr0, sector 3 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.449085] Buffer I/O error on dev sr0, logical block 3, async page read
[77792.450098] blk_update_request: I/O error, dev sr0, sector 4 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.451058] Buffer I/O error on dev sr0, logical block 4, async page read
[77792.452411] blk_update_request: I/O error, dev sr0, sector 5 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.453448] Buffer I/O error on dev sr0, logical block 5, async page read
[77792.454518] blk_update_request: I/O error, dev sr0, sector 6 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.455569] Buffer I/O error on dev sr0, logical block 6, async page read
[77792.456646] blk_update_request: I/O error, dev sr0, sector 7 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.457762] Buffer I/O error on dev sr0, logical block 7, async page read
[77792.458901] blk_update_request: I/O error, dev sr0, sector 0 op 0x0: (READ) flags 0x0 phys_seg 1 prio class 0
[77792.460028] Buffer I/O error on dev sr0, logical block 0, async page read
[77792.461166] Buffer I/O error on dev sr0, logical block 1, async page read
*-network
description: Ethernet interface
physical id: 1
logical name: eth0
serial: 00:15:5d:00:28:18
size: 1Gbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=hv_netvsc duplex=full firmware=N/A link=yes multicast=yes speed=lGbit/s