ros桥接后，只允许IP协议通过

/interface bridge filter
add action=accept chain=forward mac-protocol=arp
add action=accept chain=forward mac-protocol=ip
add action=accept chain=input mac-protocol=arp
add action=accept chain=input mac-protocol=ip
add action=accept chain=output mac-protocol=arp
add action=accept chain=output mac-protocol=ip
add action=drop chain=forward
add action=drop chain=input
add action=drop chain=output

　　用hyperv的VLAN功能，5个VLAN桥后，需要屏蔽掉相互之间的广播信号

用这个代码只允许IP网络通过