Like my last topic BPI-R2 Ethernet MAC address The network could not work after I change it’s MAC. That problem just happen when you clone your MAC in wan@eth1.
For example: your device’s MAC is 00:11:22:33:44:55. Then you use ifconfig wan hw ether 00:11:22:33:44:55 or
type it in Override MAC address, Luci. After you restart the network and plug in your device. It dead fully. (It boom sakalaka )
After I saw the picture sent by garywang I think the reason is wan and lan are all in same switch. Although they are under different interfaces(wan@eth1 and lan*@eth0).
Maybe when Vlan support is done it will be fixed. I am waiting for it. Clone MAC is very useful in daily life