wsl2 networking issue requires static ipaddr and route workaround

[vanderhoff]

Due to a known wsl2 networking issue, some users need to create a static ip and route to establish internet access. https://github.com/microsoft/WSL/issues/4275

to fix on Ubuntu the steps are

/etc/wsl.conf
[network]
generateResolvConf = false

/etc/resolv.conf
nameserver 8.8.8.8

~/.bashrc
ip addr flush dev eth0
ip addr add 192.168.0.xxx/24 dev eth0
ip route add default via 192.168.0.1

to match this on this distro I manually verified with

/etc/wsl.conf
[network]
generateResolvConf = false

/etc/resolv.conf
nameserver 8.8.8.8

$
ip addr flush dev eth0
ip addr add 192.168.0.117/24 dev eth0
ip route add default via 192.168.0.1

this returns for ip addr // route

4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:15:5d:57:9c:3d brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.117/24 scope global eth0
       valid_lft forever preferred_lft forever

default via 192.168.0.1 dev eth0
192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.117

and works as expected to access internet.

trying to automate it, I updated /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
BOOTPROTO=none
IPADDR=19.168.0.117
PREFIX=24
GATEWAY=192.168.0.1
ONBOOT=yes
DNS1=192.168.0.1
DNS2=8.8.8.8
DNS3=8.8.4.4
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
NAME=eth0
UUID= //from $uuidgen eth0//

wsl --shutdown restart but ip addr still returns

4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:15:5d:57:9c:3d brd ff:ff:ff:ff:ff:ff
    inet 172.23.5.215/20 brd 172.23.15.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::215:5dff:fe57:9c3d/64 scope link
       valid_lft forever preferred_lft forever


ip route
default via 172.23.0.1 dev eth0
172.23.0.0/20 dev eth0 proto kernel scope link src 172.23.5.215

so tried adding to .bash rc

cp /etc/skel/.bashrc ~/.bashrc
$
ip addr flush dev eth0
ip addr add 192.168.0.117/24 dev eth0
ip route add default via 192.168.0.1

source ~/.bashrc

is there a way to automate the static IP addr and route at wsl2 launch?

[yosukes-dev]

In my environment, I've solved the problem by adding the following to ~/.profile

ip addr flush dev eth0
ip addr add 172.25.160.10/20 dev eth0
ip route add default via 172.25.160.1

then returns

PS C:\Users\**********> wsl --shutdown
PS C:\Users\**********> wsl -d Amazon2
-bash-4.2# 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 12:98:72:0a:ba:6c brd ff:ff:ff:ff:ff:ff
3: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether de:78:80:dc:e9:34 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:30:d0:d3 brd ff:ff:ff:ff:ff:ff
    inet 172.25.160.10/20 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::215:5dff:fe30:d0d3/64 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

-bash-4.2# ip route
default via 172.25.160.1 dev eth0
172.25.160.0/20 dev eth0 proto kernel scope link src 172.25.160.10

I hope you will try it and let me know the results. Thanks.

[anilsamuel]

with 2.0.20211005.0, ip and yum command not working

-bash-4.2# ip addr show
-bash: ip: command not found

[jtrutwin]

with 2.0.20211005.0, ip and yum command not working

-bash-4.2# ip addr show
-bash: ip: command not found

ok it's not just me then - did you ever figure this out? Kinda hard to debug internet commands when ping, nc, route, and even ip commands are not available and you can't install anything. :)