Works on wired interfaces only - WiFi does not work because 802.11
expects a single address for a STA. Also, connections from the host
itself to the guest via this interface do not work. The latter is intrinsic
to the implementation - we capture only inbound direction of the packets
(coming from the physical wire). We could have captured outbound direction
as well, to attempt to catch the packets sent from host to guest, but
then we would also see the packets that we have just pcap_inject-ed,
which would create a need to avoid receiving them again, and in general
would complicate the implementation greatly.
Works on wired interfaces only - WiFi does not work because 802.11 expects a single address for a STA. Also, connections from the host itself to the guest via this interface do not work. The latter is intrinsic to the implementation - we capture only inbound direction of the packets (coming from the physical wire). We could have captured outbound direction as well, to attempt to catch the packets sent from host to guest, but then we would also see the packets that we have just pcap_inject-ed, which would create a need to avoid receiving them again, and in general would complicate the implementation greatly.