一段时间后，我的 wsl（版本 2）ubuntu 实例停止能够连接到互联网（或我的 LAN）。在尝试了一些卸载 vswitches 和 wsl 版本的方法之后，我现在已经从微软商店安装了一个 ubuntu 22.04 实例。
C:\Users\User>wsl -l -v
NAME STATE VERSION
* docker-desktop-data Stopped 2
Ubuntu-22.04 Stopped 2
docker-desktop Stopped 2
以下是 ubuntu 实例的一些示例：
user@user-pc:~$ ping 1.1.1.1
PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.
^C
--- 1.1.1.1 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1051ms
user@user-pc:~$ 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: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 32:34:7d:c9:f8:8f brd ff:ff:ff:ff:ff:ff
3: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 9e:b3:a3:0d:f0:7f brd ff:ff:ff:ff:ff:ff
4: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
link/ipip 0.0.0.0 brd 0.0.0.0
5: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
link/sit 0.0.0.0 brd 0.0.0.0
6: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:15:5d:8b:f1:43 brd ff:ff:ff:ff:ff:ff
inet 172.21.56.58/20 brd 172.21.63.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::215:5dff:fe8b:f143/64 scope link
valid_lft forever preferred_lft forever
user@user-pc:~$
user@user-pc:~$ dig google.com
; <<>> DiG 9.18.1-1ubuntu1-Ubuntu <<>> google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56667
;; flags: qr rd ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;google.com. IN A
;; ANSWER SECTION:
google.com. 0 IN A 142.250.185.238
;; Query time: 10 msec
;; SERVER: 172.21.48.1#53(172.21.48.1) (UDP)
;; WHEN: Wed May 11 22:55:02 EEST 2022
;; MSG SIZE rcvd: 54
#############################################################
### My LAN is 10.0.1.0/24 and physical host is 10.0.1.120 ###
#############################################################
user@user-pc:~$ ping 10.0.1.120
PING 10.0.1.120 (10.0.1.120) 56(84) bytes of data.
64 bytes from 10.0.1.120: icmp_seq=1 ttl=127 time=0.198 ms
64 bytes from 10.0.1.120: icmp_seq=2 ttl=127 time=0.225 ms
^C
--- 10.0.1.120 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1039ms
rtt min/avg/max/mdev = 0.198/0.211/0.225/0.013 ms
user@user-pc:~$
所以我有 DNS 解析并可以访问 wsl 主机，但没有互联网（也没有我的 LAN 中的其他设备）
这里有一些主机网络的东西
PS C:\Windows\system32> Get-NetAdapter
Name InterfaceDescription ifIndex Status MacAddress LinkSpeed
---- -------------------- ------- ------ ---------- ---------
Ethernet 2 Cisco AnyConnect Secure Mobility Cli... 17 Disabled 00-05-9A-3C-7A-00 995 Mbps
Ethernet Intel(R) I211 Gigabit Network Connec... 15 Up 24-4B-FE-9A-2A-4F 1 Gbps
Local Area Connection Xbox Wireless Adapter for Windows 14 Up 62-45-B5-04-86-A6 600 Mbps
vEthernet (WSL) Hyper-V Virtual Ethernet Adapter #2 36 Up 00-15-5D-B0-3C-B7 10 Gbps
vEthernet (Default Swi... Hyper-V Virtual Ethernet Adapter 30 Up 00-15-5D-4A-07-41 10 Gbps
PS C:\Windows\system32> Get-NetIPConfiguration
InterfaceAlias : Ethernet
InterfaceIndex : 15
InterfaceDescription : Intel(R) I211 Gigabit Network Connection
NetProfile.Name : Network
IPv4Address : 10.0.1.120
IPv6DefaultGateway : fe80::9
IPv4DefaultGateway : 10.0.1.1
DNSServer : 10.0.1.1
InterfaceAlias : vEthernet (Default Switch)
InterfaceIndex : 30
InterfaceDescription : Hyper-V Virtual Ethernet Adapter
IPv4Address : 172.17.32.1
IPv6DefaultGateway :
IPv4DefaultGateway :
DNSServer : fec0:0:0:ffff::1
fec0:0:0:ffff::2
fec0:0:0:ffff::3
InterfaceAlias : vEthernet (WSL)
InterfaceIndex : 36
InterfaceDescription : Hyper-V Virtual Ethernet Adapter #2
IPv4Address : 172.21.48.1
IPv6DefaultGateway :
IPv4DefaultGateway :
DNSServer : fec0:0:0:ffff::1
fec0:0:0:ffff::2
fec0:0:0:ffff::3
PS C:\Users\User> Get-NetNat
PS C:\Users\User>
有什么想法吗？我是不是错过了什么？
如果您所在的公司网络具有管理员访问权限，但防火墙很棘手，请尝试此操作。
New-NetFirewallRule -DisplayName“WSL”-方向入站 -InterfaceAlias“vEthernet (WSL)”-操作允许
Set-NetFirewallProfile -Profile Public -DisabledInterfaceAliases“vEthernet (WSL)”
Set-NetFirewallProfile -Profile Private -DisabledInterfaceAliases“vEthernet (WSL)”