After installing WSL i have problem connecting my WSL to my server through vpn connected to windows laptop.
Thanks to my friend suggest that i need try to change MTU in WSL from 1500 to 1350, viola after using command:
ifconfig eth0 mtu 1350
i can contact server from WSL
problem is this config just temporary, if You close and reopen WSL the MTU comeback to 1500, so i need to change it permanently using this command:
ip link set dev eth0 mtu 1350
Then after close and reopen wsl, MTU stick with 1350 value, i should learning more about this MTU because i think it's basic networkiing learning material.