I have now encountered multiple occasions of packet loss and ‘strange’ problems on hAPax3.
When the Bridge has ‘fast-forward’ enabled by default and two HW-offloaded ether ports active it all is fine, but as soon as a third port in the form of a dynamic wan-interface adds itself to the Bridge, it randomly fails to communicate with the upstream router.
Troubleshooting found that the AP doesn’t make ARP requests. Changing the bridge to ‘fast-forward=no’ solved the issue.
I understand that fast-forward should not be used when there are more than 2 active ports in a bridge, but it’s easy to miss since it’s the default setting.
Not sure if fast-forward was default ‘yes’ also in ROS6, or if was intrinsically disabled as soon as more than 2 ports became active in the switch, and as such didn’t fail like this?