Strange behavior on UDP Port Forwarding - Archer C80 - Bug Report
Today while troubleshooting on WireGuard vpn port forwarding, I noticed a strange behavior. WireGuard VPN works on UDP default port 51820, and I have added it in port forwarding, and everything seems to be working fine, but later for testing purpose I disabled the port forwarding and tried to connect VPN from my mobile, and it still working. Technically it should stop working, but somehow it didn't disabled it. If I delete the entry, then only it is getting disabled.
How to reproduce this:
1. Create UDP port forwarding for WireGuard.
2. Try to connect to VPN from different network, it should start working.
3. Disconnect VPN form mobile.
4. Now, disable port forwarding.
5. Again try to connect to VPN from different network, and strangly it should start working.
6. Disconnect VPN form mobile.
7. Delete UDP port forwarding from router.
8. Try to connect to VPN from different network, this time it will not work.
I have tested this multiple times, and getting exact same result. I guess this a BUG.
Regards,
Saugata D.
Sometimes while trying to re-enable it, getting this error as well.