Environment

Windows build number: 10.0.19041.264
Your Distribution version: Ubuntu 20.04
Whether the issue is on WSL 2 and/or WSL 1: WSL 2

Steps to reproduce

sudo ip link set dev eth0 down
sudo ip link set dev eth0 address 00:15:5d:09:b0:a0 # or any address, which will be fixed
sudo ip link set dev eth0 up

Expected behavior

IPv4 and IPv6 address can change(and would change), but the connection to the local physical machine and internet should be OK.

Actual behavior

I cannot use any program that requires to connect to the internet and GUI program which is attached to the local physical machine's vcxsrv X server.