直到周日我都能连接到互联网。周一我却无法连接到互联网。我的电脑上没有任何变化。我唯一做的就是sudo apt-get update下载了太多东西。据我所记得，它只下载了几 KB 的数据。
在家里，除了我的笔记本电脑外，所有手机都可以通过 WiFi 连接到互联网。当我选择 WiFi 时，它一开始看起来已连接，但随后 WiFi 图标上出现了一个问号 (?)。此外，当我将移动互联网与笔记本电脑共享时，一切正常。
$ lspci -nn |复制代码
00:14.3 Network controller [0280]: Intel Corporation Alder Lake-P PCH CNVi WiFi [8086:51f0] (rev 01)
$ ifconfig
br-1db02a26bdd0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.31.0.1 netmask 255.255.0.0 broadcast 172.31.255.255
ether 02:42:92:72:37:b2 txqueuelen 0 (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
br-35b3c8def3c9: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.30.0.1 netmask 255.255.0.0 broadcast 172.30.255.255
ether 02:42:64:e8:d0:1e txqueuelen 0 (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
br-3864e73fa63c: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.49.1 netmask 255.255.255.0 broadcast 192.168.49.255
inet6 fe80::42:59ff:fe9d:2268 prefixlen 64 scopeid 0x20<link>
ether 02:42:59:9d:22:68 txqueuelen 0 (Ethernet)
RX packets 267887 bytes 17232669 (17.2 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 468759 bytes 934153764 (934.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
br-3a165a5c993a: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.25.0.1 netmask 255.255.0.0 broadcast 172.25.255.255
ether 02:42:98:38:3c:21 txqueuelen 0 (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
br-46e81cf5fb5e: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.240.1 netmask 255.255.240.0 broadcast 192.168.255.255
ether 02:42:eb:a5:f2:33 txqueuelen 0 (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
br-4ca8610e3d72: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.0.1 netmask 255.255.240.0 broadcast 192.168.15.255
ether 02:42:7c:d6:5d:d0 txqueuelen 0 (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
br-4d363be4b599: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.19.0.1 netmask 255.255.0.0 broadcast 172.19.255.255
ether 02:42:1e:c6:9f:e1 txqueuelen 0 (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
br-4e168a0cdf31: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.27.0.1 netmask 255.255.0.0 broadcast 172.27.255.255
ether 02:42:b8:a4:bf:08 txqueuelen 0 (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
br-604867f1852d: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.22.0.1 netmask 255.255.0.0 broadcast 172.22.255.255
ether 02:42:d0:56:d6:12 txqueuelen 0 (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
br-8166f1f24274: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.24.0.1 netmask 255.255.0.0 broadcast 172.24.255.255
ether 02:42:94:2e:79:5f txqueuelen 0 (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
br-9346c9dd9a25: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.26.0.1 netmask 255.255.0.0 broadcast 172.26.255.255
ether 02:42:08:08:d5:8a txqueuelen 0 (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
br-a28feae6b83c: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.21.0.1 netmask 255.255.0.0 broadcast 172.21.255.255
ether 02:42:45:e1:6a:58 txqueuelen 0 (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
br-a593dce43362: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.18.0.1 netmask 255.255.0.0 broadcast 172.18.255.255
ether 02:42:5d:2f:e4:36 txqueuelen 0 (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
br-c77e5c8b1ce6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.16.1 netmask 255.255.240.0 broadcast 192.168.31.255
ether 02:42:fe:10:d9:e5 txqueuelen 0 (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
br-c8d5ce7ce6c1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.29.0.1 netmask 255.255.0.0 broadcast 172.29.255.255
ether 02:42:f1:7a:30:29 txqueuelen 0 (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
br-dafd9fc1c73f: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.23.0.1 netmask 255.255.0.0 broadcast 172.23.255.255
ether 02:42:43:bc:cd:78 txqueuelen 0 (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
br-f2e659a6d01a: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.20.0.1 netmask 255.255.0.0 broadcast 172.20.255.255
ether 02:42:7f:f1:f8:28 txqueuelen 0 (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
br-fd59d8ed402b: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.28.0.1 netmask 255.255.0.0 broadcast 172.28.255.255
ether 02:42:8d:fa:69:88 txqueuelen 0 (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
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
inet6 fe80::42:c5ff:fe3d:29e6 prefixlen 64 scopeid 0x20<link>
ether 02:42:c5:3d:29:e6 txqueuelen 0 (Ethernet)
RX packets 4 bytes 300 (300.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9 bytes 1143 (1.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp47s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether d8:bb:c1:b1:1d:c1 txqueuelen 1000 (Ethernet)
RX packets 263 bytes 26552 (26.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 317 bytes 29647 (29.6 KB)
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 38038 bytes 5493492 (5.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 38038 bytes 5493492 (5.4 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tun0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 10.10.10.250 netmask 255.255.255.255 destination 10.10.10.249
inet6 fe80::a0ce:d0ea:f4a6:fe9b prefixlen 64 scopeid 0x20<link>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 61 bytes 7612 (7.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 218 bytes 27560 (27.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
veth0dc7448: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::18aa:8ff:fe8e:523e prefixlen 64 scopeid 0x20<link>
ether 1a:aa:08:8e:52:3e txqueuelen 0 (Ethernet)
RX packets 267887 bytes 20983087 (20.9 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 468794 bytes 934158782 (934.1 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.20.10.2 netmask 255.255.255.240 broadcast 172.20.10.15
inet6 fe80::29e5:ff56:dd82:cbc5 prefixlen 64 scopeid 0x20<link>
ether c4:bd:e5:23:9c:9a txqueuelen 1000 (Ethernet)
RX packets 747554 bytes 1042650489 (1.0 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 337029 bytes 35702664 (35.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0