几天前以太网还可以用。但现在我只能使用速度很慢的 wifi。
以下是输出ifconfig
(前两个是以太网接口):
enp0s31f6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 1c:1b:0d:67:e9:74 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16 memory 0xef300000-ef320000
enp4s1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether d4:6e:0e:00:8c:e9 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 1228 bytes 91800 (91.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1228 bytes 91800 (91.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx1cbfce2bb446: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.7.126 netmask 255.255.0.0 broadcast 10.0.255.255
inet6 fe80::d273:a97:e944:dc81 prefixlen 64 scopeid 0x20<link>
ether 1c:bf:ce:2b:b4:46 txqueuelen 1000 (Ethernet)
RX packets 157 bytes 36587 (36.5 KB)
RX errors 0 dropped 9 overruns 0 frame 0
TX packets 192 bytes 27036 (27.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
我试过了ifdown
但是它说未知接口
$ sudo ifdown enp4s1
Unknown interface enp4s1
$ sudo ifdown enp0s31f6
Unknown interface enp0s31f6
答案1
重新声明界面怎么样?
首先添加
network
version: 2
renderer: networkd
ethernets:
[your interface name]:
dhcp4: true
dhcp6: true
到
*.ymal
归档于
/etc/netplan/
进而
sudo ifdown [interface name] && sudo ifup [intreface name]
如果这对您没有帮助,请告知!