我的桌面变得很奇怪。我安装了 Ubuntu 18.04，并设置了桥接器（用于我的游戏虚拟机），直到昨天一切都运行正常。今天启动时，没有网络连接。我不知道问题出在哪里，日志对我没有太大帮助。到目前为止，我唯一改变的是禁用桥接器的 STP，因为我查看的几个谷歌搜索结果中提到了这一点……
root@pc-f-linux:~# 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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br0 state UP group default qlen 1000
link/ether 70:85:c2:76:de:c5 brd ff:ff:ff:ff:ff:ff
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:b3:b3:5e brd ff:ff:ff:ff:ff:ff
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:b3:b3:5e brd ff:ff:ff:ff:ff:ff
29: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 70:85:c2:76:de:c5 brd ff:ff:ff:ff:ff:ff
inet 192.168.8.201/24 brd 192.168.8.255 scope global noprefixroute br0
valid_lft forever preferred_lft forever
inet6 fe80::7285:c2ff:fe76:dec5/64 scope link
valid_lft forever preferred_lft forever
root@pc-f-linux:~# cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
ethernets:
eth0:
dhcp4: no
dhcp6: no
match:
macaddress: 70:85:c2:76:de:c5
wakeonlan: true
bridges:
br0:
interfaces: [eth0]
dhcp4: false
addresses: [192.168.8.201/24]
gateway4: 192.168.8.1
nameservers:
addresses: [192.168.8.5]
dhcp6: false
root@pc-f-linux:~# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.7085c276dec5 no eth0
virbr0 8000.525400b3b35e yes virbr0-nic
德姆斯格-T
[So Aug 22 11:09:27 2021] device eth0 entered promiscuous mode
[So Aug 22 11:09:27 2021] br0: port 1(eth0) entered blocking state
[So Aug 22 11:09:27 2021] br0: port 1(eth0) entered listening state
[So Aug 22 11:09:43 2021] br0: port 1(eth0) entered learning state
[So Aug 22 11:09:58 2021] br0: port 1(eth0) entered forwarding state
[So Aug 22 11:09:58 2021] br0: topology change detected, propagating
[So Aug 22 11:11:40 2021] device eth0 left promiscuous mode
[So Aug 22 11:11:40 2021] br0: port 1(eth0) entered disabled state
[So Aug 22 11:11:40 2021] IPv6: ADDRCONF(NETDEV_UP): virbr0: link is not ready
[So Aug 22 11:11:40 2021] IPv6: ADDRCONF(NETDEV_UP): br0: link is not ready
[So Aug 22 11:11:40 2021] IPv6: ADDRCONF(NETDEV_UP): virbr0: link is not ready
[So Aug 22 11:11:40 2021] IPv6: ADDRCONF(NETDEV_UP): br0: link is not ready
[So Aug 22 11:11:40 2021] br0: port 1(eth0) entered blocking state
[So Aug 22 11:11:40 2021] br0: port 1(eth0) entered disabled state
[So Aug 22 11:11:40 2021] device eth0 entered promiscuous mode
[So Aug 22 11:11:40 2021] br0: port 1(eth0) entered blocking state
[So Aug 22 11:11:40 2021] br0: port 1(eth0) entered listening state
[So Aug 22 11:11:56 2021] br0: port 1(eth0) entered learning state
[So Aug 22 11:12:11 2021] br0: port 1(eth0) entered forwarding state
[So Aug 22 11:12:11 2021] br0: topology change detected, propagating
root@pc-f-linux:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: on (auto)
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
root@pc-f-linux:~# lspci -vvvs 00:1f.6
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V
Subsystem: ASRock Incorporation Ethernet Connection (2) I219-V
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 141
Region 0: Memory at df400000 (32-bit, non-prefetchable) [size=128K]
Capabilities: [c8] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=1 PME-
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee00498 Data: 0000
Capabilities: [e0] PCI Advanced Features
AFCap: TP+ FLR+
AFCtrl: FLR-
AFStatus: TP-
Kernel driver in use: e1000e
Kernel modules: e1000e
任何想法都值得赞赏！
答案1
我修好了……计算机通过电力线适配器连接到网络的其余部分……不知何故我从未质疑过这一点，因为 ethtool 显示有连接，但它一定是内部的东西。无论如何，拔下并重新插入两个适配器都可以。