All I have the following setup: 4 VLAN interfaces enslaved in a bridge interface. All VLAN interfaces don't have IP address. The bridge interface has 192.168.1.1/24. Now, when I try to ping from one of the VLAN interfaces, through a host connected to a VLAN switch, while dumping the traffic, the following happens: - Host sends ARP who-has broadcast to the VLAN interface (tagged correctly, originating from the host MAC) - Linux receives the who-has and does 2 things: - It floods all VLAN interfaces with the same ARP who-has request - It responds with a unicast is-at on the correct VLAN interface The question is: why does it flood while the ARP is destined to the bridge interface? The problem: I have a another switch connected passively between the Linux box and the VLAN switch. When the bridge floods (which naturally happens from the source of the originating box), it causes the switch to be confused on where to find this specific MAC address and hence dropping the frame. Please advice.
