Time wait bucket overflow on Windows Ethernet only..

[markval]

Hi guys,

I got an issue where only the Windows PCs connected with Ethernet triggers "time wait bucket overflow" and eventually loose internet access after a few seconds while the Local network works fine to access smb or the router admin for example. If I use WiFi those PCs got no problem at all to reach internet. Macs or Linux stations that are wired got no problems as well using the same cables used with the Windows machine.

One of the PC is brand new swith only Windows 10 installed and is affected as well.

Its running on RT-AC56U firmware 380.62_1

Any ideas?

 

[markval]

Found the issue.

New firmware in Firewall, that is between the modem and the router, turned a UDP filter ON...

So the issue was coming from the Cisco Firewall and not the Router.

Thanks!