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The original was posted on /r/wireguard by /u/Jolly_Charity_5739 on 2024-01-18 21:13:51+00:00.
Hey everyone! I recently set up a WireGuard server on my home network, and it works great! I was even successfully able to set up an iptable rule so that only my specific configuration could access the local network - everyone else who I have created a configuration for simply has their packets dropped. However, on some networks, I run into a very strange routing issue. When I activate my WireGuard tunnel, I notice that my network indicator symbol(I'm on Windows 11" indicates that I have no internet connection. On mousing over the icon, I see that my VPN tunnel has no connection, but the network I'm connected to does. However, I am unable to browse the internet, nor connect to any of the devices on my home LAN. Something I find very odd however, is that if I enable a different VPN, then activate my tunnel, and then DISCONNECT said different VPN, my tunnel stays connected and I am able to browse the internet and my LAN through it. What gives? I've done a trace route to my home IP address through the remote network, and I'm unable to access it. How come I'm still able to access it after turning off the other VPN? Shouldn't that end the connection I have to my home LAN?