Cannot ping 8.8.8.8 unless I connect to Mullvad VPN.

[karasuhebi]

Hi there! I recently added a PC running OPNsense to my network. Ever since then, I cannot ping 8.8.8.8 unless I connect to a Mullvad VPN server. The strange part is, disconnecting from the Mullvad VPN doesn't make the pings stop working. The only way I've found that I can "break" the pings to 8.8.8.8 is by restarting the OPNsense PC.

Any idea what would be causing this random issue?