>> Can you try to set disable hardware offloading in pfsense advanced.....
>What would that do?

        In Xen, at least, it's basically necessary to get usable throughput 
from VirtIO adapters.  It also solved a slew of false positives in our Suricata 
setup on our previous virtualization, and I want to say on at least one 
physical server also since we have it disabled there.  Worst case it uses a bit 
more CPU and you can turn it back on pretty easily.

https://doc.pfsense.org/index.php/Lost_Traffic_/_Packets_Disappear
https://doc.pfsense.org/index.php/Tuning_and_Troubleshooting_Network_Cards#TSO.2FLRO

(
https://doc.pfsense.org/index.php/VirtIO_Driver_Support
Xen/KVM networking will not work using default hypervisor settings!: 
https://forum.pfsense.org/index.php?topic=88467.0
)

--

Steve Yates
ITS, Inc.
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