Re: FreeBSD guest on Linux KVM, some vtnet(4) packets don't arrive

> On 9. Apr 2026, at 20:09, Lexi Winter <[email protected]> wrote:
> 
> Michael Tuexen wrote in <[email protected]>:
>> Interesting. Updating kernel and world on a bare metal Power9 system
>> works without a problem:
>> FreeBSD blackbird.testbed 16.0-CURRENT FreeBSD 16.0-CURRENT #1 main-n284938-aacf448007f7: Thu Apr  9 15:54:05 CEST 2026     [email protected]:/usr/obj/usr/home/tuexen/freebsd-src/powerpc.powerpc64/sys/TCP powerpc
>> 
>> Even scp'ing a 4GB file to the machine worked.
>> 
>> What network interface are you using in the VM?
> 
> on my system:
> 
> virtio_pci1: <VirtIO PCI (legacy) Network adapter> port 0x20-0x3f mem 0x81030000-0x81030fff,0x210000000000-0x210000003fff irq 4610 at device 2.0 numa-domain 0 on pci0
> vtnet0: <VirtIO Networking Adapter> numa-domain 0 on virtio_pci1
> vtnet0: Ethernet address: 52:54:00:12:34:56
> vtnet0: netmap queues/slots: TX 1/256, RX 1/128
> 000.000056 [ 452] vtnet_netmap_attach       vtnet attached txq=1, txd=256 rxq=1, rxd=128
I have never tried vtnet on a big endian machine.
> 
> the host is:
> 
> QEMU emulator version 10.1.3
> Copyright (c) 2003-2025 Fabrice Bellard and the QEMU Project developers
> 
> i'm currently building latest main (which takes a while) to see if that works
> any better.
> 
> i was able to netcat over a copy of src.tar.gz (2.2GB), which decompressed
> fine, suggesting the basic networking functionality is okay.
I agree.

Since you can do something on the PPC machine: When on the machine, can you ssh into it over loopback?
You to test if the ssh code works locally?

Best regards
Michael