[Qemu-discuss] Networking: Questions about Host to Guest interal traffic management

[David Borman]

Hi,

I have a Instance running and iam curious about the internals and how 
the packets are routed from the physical (hostsystem) layer to the 
Internal, virtual Guest interface (virtio, e1000, rtl8139 ect) 
(IP/TCP/UDP/ICMP Data only).

"How" is an inboud packet, reaching the hosts physical ethernetcard 
hardware forwarded to the virtual nic inside the guest os and what is 
happening if the guest os firewall
 drops/reject/accept the packet?

1) Will the Hostsystem drop this packet physically?
2) Is the Guest OS dropping the packet at the virtual guest network 
adapter?
(and if so, what data still remains inside the Hostsystem memory 
structures and what event triggers the memory cleanup?)

ps:
If there is any good docs out there, then please let me now. On google i 
only find very generic stuff.

Thx, David