Hello, found an very strange problem, which seems more to be an qemu/kvm issue. Maybe one of you knows what happens and give me an hint to solved this (with vio).
I use an debian 9.0 kvm/qemu setup with bridge-networking. After i upgrade from debian 8.0 to 9.0 i run into a problem with my OpenBSD 6.0 i386, OpenBSD 6.1 i386 guests and the vio(4) driver. I also know that is better to use the amd64 stuff on an amd64 host. Used this combination for crosscompile for i386 targets. I tried the 0x2 settings to vio and reboot. No success. If i change the device to e1000 in qemu/kvm it works. On google and the archives i found only stuff for the OpenBSD 5.x and/or KVM below 1.7. I also destroyed the kvm/qemu default-network and setup the bridge manually. The arp table on the guest is empty (only the vio card itself). The arp table on the hosts: root@m1:~/install-obsd# brctl showmacs virbr0 port no mac addr is local? ageing timer 2 52:54:00:5c:cf:5c no 12.32 2 fe:54:00:5c:cf:5c yes 0.00 2 fe:54:00:5c:cf:5c yes 0.00 1 fe:54:00:67:5c:bd yes 0.00 1 fe:54:00:67:5c:bd yes 0.00 dmesg on the OpenBSD guest 6.1: OpenBSD 6.1 (GENERIC.MP) #291: Sat Apr 1 13:53:41 MDT 2017 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP cpu0: Intel Xeon E3-12xx v2 (Ivy Bridge) ("GenuineIntel" 686-class) 3.40 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CF LUSH,MMX,FXSR,SSE,SSE2,NXE,LONG,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,x2APIC,POPC NT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,LAHF,FSGSBASE,SMEP,ERMS,ARAT real mem = 2146844672 (2047MB) avail mem = 2092953600 (1995MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: date 06/23/99, BIOS32 rev. 0 @ 0xfd5a3, SMBIOS rev. 2.8 @ 0xf 68a0 (10 entries) bios0: vendor SeaBIOS version "1.10.2-1" date 04/01/2014 bios0: QEMU Standard PC (i440FX + PIIX, 1996) acpi0 at bios0: rev 0 acpi0: sleep states S5 acpi0: tables DSDT FACP APIC acpi0: wakeup devices acpitimer0 at acpi0: 3579545 Hz, 24 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges # dmesg OpenBSD 6.1 (GENERIC.MP) #291: Sat Apr 1 13:53:41 MDT 2017 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP cpu0: Intel Xeon E3-12xx v2 (Ivy Bridge) ("GenuineIntel" 686-class) 3.40 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,NXE,LONG,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,LAHF,FSGSBASE,SMEP,ERMS,ARAT real mem = 2146844672 (2047MB) avail mem = 2092953600 (1995MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: date 06/23/99, BIOS32 rev. 0 @ 0xfd5a3, SMBIOS rev. 2.8 @ 0xf68a0 (10 entries) bios0: vendor SeaBIOS version "1.10.2-1" date 04/01/2014 bios0: QEMU Standard PC (i440FX + PIIX, 1996) acpi0 at bios0: rev 0 acpi0: sleep states S5 acpi0: tables DSDT FACP APIC acpi0: wakeup devices acpitimer0 at acpi0: 3579545 Hz, 24 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges cpu0: apic clock running at 1000MHz cpu1 at mainbus0: apid 1 (application processor) cpu1: Intel Xeon E3-12xx v2 (Ivy Bridge) ("GenuineIntel" 686-class) 3.40 GHz cpu1: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,NXE,LONG,SSE3,PCLMUL,SSSE3,CX16,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,HV,LAHF,FSGSBASE,SMEP,ERMS,ARAT ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins acpiprt0 at acpi0: bus 0 (PCI0) acpicpu0 at acpi0: C1(@1 halt!) acpicpu1 at acpi0: C1(@1 halt!) "ACPI0006" at acpi0 not configured "PNP0303" at acpi0 not configured "PNP0F13" at acpi0 not configured "PNP0700" at acpi0 not configured "PNP0501" at acpi0 not configured "PNP0A06" at acpi0 not configured "PNP0A06" at acpi0 not configured "PNP0A06" at acpi0 not configured "QEMU0002" at acpi0 not configured "ACPI0010" at acpi0 not configured bios0: ROM list: 0xc0000/0x9a00 0xca000/0xe00 0xcb000/0x2400 0xec000/0x4000! pvbus0 at mainbus0: KVM pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02 pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00 pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility wd0 at pciide0 channel 0 drive 0: <QEMU HARDDISK> wd0: 16-sector PIO, LBA48, 30720MB, 62914560 sectors atapiscsi0 at pciide0 channel 0 drive 1 scsibus1 at atapiscsi0: 2 targets cd0 at scsibus1 targ 0 lun 0: <QEMU, QEMU DVD-ROM, 2.5+> ATAPI 5/cdrom removable wd0(pciide0:0:0): using PIO mode 4, DMA mode 2 cd0(pciide0:0:1): using PIO mode 4, DMA mode 2 pciide0: channel 1 disabled (no drives) piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 0 int 9 iic0 at piixpm0 vga1 at pci0 dev 2 function 0 "Cirrus Logic CL-GD5446" rev 0x00 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) virtio0 at pci0 dev 3 function 0 "Qumranet Virtio Network" rev 0x00 vio0 at virtio0: RingEventIdx disabled by UKC: address 52:54:00:5c:cf:5c virtio0: apic 0 int 11 uhci0 at pci0 dev 4 function 0 "Intel 82801I USB" rev 0x03: apic 0 int 11 uhci1 at pci0 dev 4 function 1 "Intel 82801I USB" rev 0x03: apic 0 int 10 uhci2 at pci0 dev 4 function 2 "Intel 82801I USB" rev 0x03: apic 0 int 10 ehci0 at pci0 dev 4 function 7 "Intel 82801I USB" rev 0x03: apic 0 int 11 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 virtio1 at pci0 dev 5 function 0 "Qumranet Virtio Memory" rev 0x00 viomb0 at virtio1 virtio1: apic 0 int 10 isa0 at pcib0 isadma0 at isa0 fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 fd0 at fdc0 drive 1: density unknown com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com0: console pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 usb1 at uhci0: USB revision 1.0 uhub1 at usb1 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb2 at uhci1: USB revision 1.0 uhub2 at usb2 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb3 at uhci2: USB revision 1.0 uhub3 at usb3 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00 addr 1 nvram: invalid checksum vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on wd0a (024f081bc715aa80.a) swap on wd0b dump on wd0b clock: unknown CMOS layout Change boot kernel images to vio 0x2, reboot: # config -ef /bsd.sp OpenBSD 6.1 (GENERIC) #291: Sat Apr 1 13:49:08 MDT 2017 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC Enter 'help' for information ukc> find vio 57 vio* at virtio* flags 0x0 ukc> change 57 57 vio* at virtio* flags 0x0 change [n] y flags [0] ? 2 57 vio* changed 57 vio* at virtio* flags 0x2 ukc> quit Saving modified kernel. # config -ef /bsd OpenBSD 6.1 (GENERIC.MP) #291: Sat Apr 1 13:53:41 MDT 2017 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP Enter 'help' for information ukc> find vio 57 vio* at virtio* flags 0x0 ukc> change 57 57 vio* at virtio* flags 0x0 change [n] y flags [0] ? 2 57 vio* changed 57 vio* at virtio* flags 0x2 ukc> q Saving modified kernel. -- Kind Regards *Karsten Horsmann*