Tengo una máquina Debian, en la que uso KVM para correr una viejo XP que usa un software que usamos, usaba una interfaz de red Virtio con drivers versión 0.1-100 el cual corría sobre una Debian Jessie.
Decidí actualizar a Stretch (9.11) pues necesitaba correr una aplicación más moderna que me interesaba, hice el tipico apt-get update, apt-get ugprade y apt-get dist-upgrade aparentemente todo termino con normalidad, posteriormente un apt-get autoremove
El caso es que el interfaz red que usaba el XP virtualizado dejó de funcionar, lo primero que hice fue bajar los virtio drivers 0.1-171 (estable) y actualizarlo en el XP, pero seguía sin funcionar, el interfaz aparentemente levanta, envía paquetes pero no recibe.
Cambié de bridge (virtio) a e1000 e instalé el driver en el XP y funciona correctamente, pero como cuando hice pruebas con iperf ví que el rendimiento de red era mejor con virtio, sigo intentando con el driver para-virtualizado.
He estado viendo tutoriales y guías, así como problemas relacionados, y aparentemente la configuración es correcta, lo curioso es que compruebo que efectivamente los paquetes salen pero aparentemente no vuelven al XP, lo he comprobado haciendo un ping a un router cisco y activando el debug ip icmp, con lo que voy viendo que se reciben los paquetes con IP origen la IP del XP.
Configuración del host:
/etc/network/interfaces:
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet manual
auto br0
iface br0 inet static
address 192.168.0.99
network 192.168.0.0
netmask 255.255.255.0
broadcast 192.168.0.255
gateway 192.168.0.1
bridge_ports eth0
bridge_stp off
bridge_fd 0
bridge_maxwait 5
----------------------------------------------------------
#ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.99 netmask 255.255.255.0 broadcast
192.168.0.255
inet6 fe80::fab1:56ff:feac:263b prefixlen 64 scopeid
0x20<link>
ether f8:b1:56:ac:26:3b txqueuelen 1000 (Ethernet)
RX packets 303656 bytes 389521494 (371.4 MiB)
RX errors 0 dropped 292 overruns 0 frame 0
TX packets 172191 bytes 31328267 (29.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether f8:b1:56:ac:26:3b txqueuelen 1000 (Ethernet)
RX packets 312922 bytes 396777313 (378.3 MiB)
RX errors 0 dropped 252 overruns 0 frame 0
TX packets 184775 bytes 35006703 (33.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xf7100000-f7120000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 96 bytes 6748 (6.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 96 bytes 6748 (6.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vnet1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fc54:ff:fe40:d62d prefixlen 64 scopeid
0x20<link>
ether fe:54:00:40:d6:2d txqueuelen 1000 (Ethernet)
RX packets 1281 bytes 94213 (92.0 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 627 bytes 125283 (122.3 KiB)
TX errors 0 dropped 995 overruns 0 carrier 0 collisions
0
---------
aquí el proceso en ejecución ps aux | grep qemu
root 3325 9.1 8.7 3076588 2158784 ? Sl 01:07 3:37
qemu-system-x86_64 -enable-kvm -name
guest=WinXP-RawDisk,debug-threads=on -S - object
secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-7-WinXP-RawDisk/master-key.aes
-machine pc-1.1,accel=kvm,usb=off,dump-guest-core=off -cpu
SandyBridge,+monitor,+tm2,+est,+vmx,+osxsave,+smx,+ss,+vme,+dtes64,+abm,+ht,+ds,+pbe,+tm,+pdcm,+pdpe1gb,+ds_cpl,+movbe,+xtpr,+acpi,+fma
-m 2048 -realtime mlock=off -smp 4,sockets=4,cores=1,threads=1
-uuid 1c955ad7-999d-a120-629e-027698586e1b -no-user-config
-nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-7-WinXP-RawDisk/monitor.sock,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=localtime -no-shutdown -boot strict=on -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
ahci,id=sata0,bus=pci.0,addr=0x6 -drive
file=/dev/sda2,format=raw,if=none,id=drive-virtio-disk1,cache=none,aio=native
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk1,id=virtio-disk1,bootindex=1
-drive
file=/w2003/virtio-win-0.1.171.iso,format=raw,if=none,id=drive-ide0-1-0,readonly=on
-device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0
-fsdev
local,security_model=mapped,id=fsdev-fs0,path=/root/Descargas,readonly
-device
virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=jose,bus=pci.0,addr=0x7
-netdev tap,fd=26,id=hostnet0,vhost=on,vhostfd=28 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:40:d6:2d,bus=pci.0,addr=0x3
-chardev pty,id=charserial0 -device
isa-serial,chardev=charserial0,id=serial0 -device
usb-tablet,id=input0,bus=usb.0,port=1 -vnc 127.0.0.1:1 -device
VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 -device
intel-hda,id=sound0,bus=pci.0,addr=0x4 -device
hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device
virtio-balloon-pci,id=balloon0,bus=pci .0,addr=0x5 -msg
timestamp=on
--------
cat WinXP-RawDisk.xml
<domain type='kvm' id='7'>
<name>WinXP-RawDisk</name>
<uuid>1c955ad7-999d-a120-629e-027698586e1b</uuid>
<memory unit='KiB'>2097152</memory>
<currentMemory unit='KiB'>2097152</currentMemory>
<vcpu placement='static'>4</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64' machine='pc-1.1'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<cpu mode='custom' match='exact'>
<model fallback='forbid'>SandyBridge</model>
<vendor>Intel</vendor>
<feature policy='require' name='monitor'/>
<feature policy='require' name='tm2'/>
<feature policy='require' name='est'/>
<feature policy='require' name='vmx'/>
<feature policy='require' name='osxsave'/>
<feature policy='require' name='smx'/>
<feature policy='require' name='ss'/>
<feature policy='require' name='vme'/>
<feature policy='require' name='dtes64'/>
<feature policy='require' name='abm'/>
<feature policy='require' name='ht'/>
<feature policy='require' name='ds'/>
<feature policy='require' name='pbe'/>
<feature policy='require' name='tm'/>
<feature policy='require' name='pdcm'/>
<feature policy='require' name='pdpe1gb'/>
<feature policy='require' name='ds_cpl'/>
<feature policy='require' name='movbe'/>
<feature policy='require' name='xtpr'/>
<feature policy='require' name='acpi'/>
<feature policy='require' name='fma'/>
</cpu>
<clock offset='localtime'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/bin/kvm</emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw' cache='none'
io='native'/>
<source dev='/dev/sda2'/>
<backingStore/>
<target dev='vdb' bus='virtio'/>
<alias name='virtio-disk1'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x08' function='0x0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/w2003/virtio-win-0.1.171.iso'/>
<backingStore/>
<target dev='hdc' bus='ide'/>
<readonly/>
<alias name='ide0-1-0'/>
<address type='drive' controller='0' bus='1' target='0'
unit='0'/>
</disk>
<controller type='usb' index='0' model='piix3-uhci'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x01' function='0x2'/>
</controller>
<controller type='ide' index='0'>
<alias name='ide'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x01' function='0x1'/>
</controller>
<controller type='sata' index='0'>
<alias name='sata0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x06' function='0x0'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci.0'/>
</controller>
<filesystem type='mount' accessmode='mapped'>
<source dir='/root/Descargas'/>
<target dir='jose'/>
<readonly/>
<alias name='fs0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x07' function='0x0'/>
</filesystem>
<interface type='bridge'>
<mac address='52:54:00:40:d6:2d'/>
<source bridge='br0'/>
<target dev='vnet1'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/3'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/3'>
<source path='/dev/pts/3'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<input type='tablet' bus='usb'>
<alias name='input0'/>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'>
<alias name='input1'/>
</input>
<input type='keyboard' bus='ps2'>
<alias name='input2'/>
</input>
<graphics type='vnc' port='5901' autoport='yes'
listen='127.0.0.1'>
<listen type='address' address='127.0.0.1'/>
</graphics>
<sound model='ich6'>
<alias name='sound0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x04' function='0x0'/>
</sound>
<video>
<model type='vga' vram='16384' heads='1'
primary='yes'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x05' function='0x0'/>
</memballoon>
</devices>
<seclabel type='none' model='none'/>
<seclabel type='dynamic' model='dac' relabel='yes'>
<label>+0:+0</label>
<imagelabel>+0:+0</imagelabel>
</seclabel>
</domain>
--------------------------
Visto todo, ¿algun sugerencia de por donde atacar el problema?
Gracias de antemano.
