无法从WSL2访问网络

Question

我无法从WSL2子系统访问我的家庭网络。我已经在里面安装了Ubuntu。

anirban@Desktop:/mnt/g/BASH_WORKSPACE$ lsb_release -a                                                             No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.2 LTS
Release:        18.04
Codename:       bionic
anirban@Desktop:/mnt/g/BASH_WORKSPACE$ uname -r                                                                   4.19.57-microsoft-standard

WSL2中的eth0具有以下配置：

anirban@Desktop:/mnt/g/BASH_WORKSPACE$ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.20.213.230  netmask 255.255.240.0  broadcast 172.20.223.255
        inet6 fe80::215:5dff:fecf:39a5  prefixlen 64  scopeid 0x20<link>
        ether 00:15:5d:cf:39:a5  txqueuelen 1000  (Ethernet)
        RX packets 100  bytes 10544 (10.5 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 12  bytes 936 (936.0 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 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

anirban@Desktop:/mnt/g/BASH_WORKSPACE$ ip addr show                                                               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 92:ce:02:d5:ab:9b brd ff:ff:ff:ff:ff:ff
3: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether ce:ec:a2:b5:b2:b0 brd ff:ff:ff:ff:ff:ff
4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:15:5d:cf:39:a5 brd ff:ff:ff:ff:ff:ff
    inet 172.20.213.230/20 brd 172.20.223.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::215:5dff:fecf:39a5/64 scope link
       valid_lft forever preferred_lft forever
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

来自WSL2的路由没有默认路由。因此，我添加了一条通过eth0的默认路由。

anirban@Desktop:/mnt/g/BASH_WORKSPACE$ ip route
172.20.208.0/20 dev eth0 proto kernel scope link src 172.20.213.230
anirban@Desktop:/mnt/g/BASH_WORKSPACE$ sudo ip route  add default dev eth0                                        anirban@Desktop:/mnt/g/BASH_WORKSPACE$ ip route                                                                   default dev eth0 scope link
172.20.208.0/20 dev eth0 proto kernel scope link src 172.20.213.230

Windows中的vEthernet具有默认配置，令人惊讶的是，它不属于WSL的子网。

PS C:\Users\tukai> ipconfig

Windows IP Configuration


Ethernet adapter Ethernet:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Ethernet adapter VirtualBox Host-Only Network #3:

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::61be:a6f4:e22d:e985%54
   IPv4 Address. . . . . . . . . . . : 192.168.99.1
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . :

Wireless LAN adapter Local Area Connection* 1:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Wireless LAN adapter Local Area Connection* 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Wireless LAN adapter Wi-Fi:

   Connection-specific DNS Suffix  . :
   IPv6 Address. . . . . . . . . . . : 2a02:8108:45c0:263c::67fd
   IPv6 Address. . . . . . . . . . . : 2a02:8108:45c0:263c:a847:a373:36ab:c040
   Temporary IPv6 Address. . . . . . : 2a02:8108:45c0:263c:18a:4a6a:fb9a:3018
   Link-local IPv6 Address . . . . . : fe80::a847:a373:36ab:c040%11
   IPv4 Address. . . . . . . . . . . : 192.168.0.96
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : fe80::f2af:85ff:fea5:c6e6%11
                                       192.168.0.1

Ethernet adapter Bluetooth Network Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Ethernet adapter vEthernet (WSL):

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::41b:9492:2bea:cf6c%49
   IPv4 Address. . . . . . . . . . . : 172.20.208.1
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Default Gateway . . . . . . . . . :

有没有人知道问题出在哪里？注意:我的wifi显然有互联网接入，我正在尝试从WSL2子系统ping 8.8.8.8，以检查互联网连接。我使用的是Windows预览版10.0.18956

谢谢,

Answer 1

我也遇到了同样的问题，并通过运行下面的命令使它再次工作(我是从其他地方得到的，抱歉，我不记得在哪里了)：

wsl中的

修复网络问题，删除自动生成的文件

[root@PC-NAME user]# rm /etc/resolv.conf || true
[root@PC-NAME user]# rm /etc/wsl.conf || true

启用更改/etc/resolv.conf，启用Windows驱动器上的扩展属性

[root@PC-NAME user]# cat <<EOF > /etc/wsl.conf
[network]
generateResolvConf = false
[automount]
enabled = true
options = "metadata"
mountFsTab = false
EOF

使用谷歌域名服务器进行域名解析

[root@PC-NAME user]# cat <<EOF > /etc/resolv.conf
nameserver 8.8.8.8
nameserver 8.8.4.4
EOF

退出Linux WSL

Windows中的管理员，cmd身份为：

wsl --shutdown
netsh winsock reset
netsh int ip reset all
netsh winhttp reset proxy
ipconfig /flushdns

窗口搜索>网络重置

Answer 2

今天早些时候，我正在寻找关于这方面的信息，偶然发现了一个写得很好的要点，它有你需要的确切说明-- https://gist.github.com/pyther/b7c03579a5ea55fe431561b502ec1ba8

其中包括有关如何在连接到VPN或从VPN断开时进行这些网络更改的说明。

Answer 3

我花了几天时间才找到一个类似问题的答案...:-/给这个家伙所有的荣誉：https://github.com/microsoft/WSL/issues/5286#issuecomment-638739724

在我做完所有关于/etc/resolv.conf的事情之后，它仍然不能工作，所以我的问题是关于压缩，我在笔记本电脑驱动器上打开了它。

修复方法是解压缩临时文件夹(除了包含WSL包的文件夹)：

wsl --shutdown
compact /u %TEMP% /i /Q