network config:
ens15f2(nic) -> vmbr4(bridge) -> eth0(guest os).
network traffic from ens15f2 can't mirror to eth0.
using tcpdump -i eth0 got nothing, but tcpdump -i vmbr4 can got packets.
so how to mirror network traffic to eth0 like a switch?
1、PVE(host) can get receive data from serial port。
2、serial port (ttyS0) in VM can't receive data。
how to let serial port(ttyS0) in VM received data from COM?