[Pkg-libvirt-maintainers] Bug#732229: libvirt-bin: Use of macvtap (via virt-manager interface) results in XP guest dieing with not warning on network activity

[Daniel Dickinson]

Package: libvirt-bin
Version: 0.9.12-11+deb7u4
Severity: normal

Using macvtap (configured via virt-manager and resulting in the xml below), results in an XP guest terminating abruptly, with no warning, on attempts to access windows update or even just browse http://mozilla.org

Ping and DHCP seem to work, so really small amounts of network activity aren't enough to trigger the bug.

The VM dies quite thoroughly so it might be an underlying qemu-kvm issue with the macvtap device (qemu-kvm used it like a tun/tap devices, perhaps there is a mismatch between the expected API/ABI).

XML: This is the only part that is different from an working NAT network interface guest VM

    <interface type='direct'>
      <mac address='52:54:00:6a:ae:53'/>
      <source dev='eth2' mode='bridge'/>
      <model type='pcnet'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
    </interface>

-- System Information:
Debian Release: 7.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libvirt-bin depends on:
ii  adduser             3.113+nmu3
ii  gettext-base        0.18.1.1-9
ii  libavahi-client3    0.6.31-2
ii  libavahi-common3    0.6.31-2
ii  libblkid1           2.20.1-5.3
ii  libc6               2.13-38
ii  libcap-ng0          0.6.6-2
ii  libdbus-1-3         1.6.8-1+deb7u1
ii  libdevmapper1.02.1  2:1.02.74-8
ii  libgcrypt11         1.5.0-5+deb7u1
ii  libgnutls26         2.12.20-7
ii  libnetcf1           0.1.9-2
ii  libnl1              1.1-7
ii  libnuma1            2.0.8~rc4-1
ii  libparted0debian1   2.3-12
ii  libpcap0.8          1.3.0-1
ii  libpciaccess0       0.13.1-2
ii  libreadline6        6.2+dfsg-0.1
ii  libsasl2-2          2.1.25.dfsg1-6+deb7u1
ii  libudev0            175-7.2
ii  libvirt0            0.9.12-11+deb7u4
ii  libxenstore3.0      4.1.4-3+deb7u1
ii  libxml2             2.8.0+dfsg1-7+nmu2
ii  libyajl2            2.0.4-2
ii  logrotate           3.8.1-4

Versions of packages libvirt-bin recommends:
ii  bridge-utils    1.5-6
ii  dmidecode       2.11-9
ii  dnsmasq-base    2.62-3+deb7u1
ii  ebtables        2.0.10.4-1
ii  gawk            1:4.0.1+dfsg-2.1
ii  iproute         20120521-3+b3
ii  iptables        1.4.14-3.1
ii  libxml2-utils   2.8.0+dfsg1-7+nmu2
ii  netcat-openbsd  1.105-7
ii  parted          2.3-12
ii  qemu            1.1.2+dfsg-6a
ii  qemu-kvm        1.1.2+dfsg-6

Versions of packages libvirt-bin suggests:
ii  policykit-1  0.105-3
ii  radvd        1:1.8.5-1

-- Configuration Files:
/etc/libvirt/qemu.conf [Errno 13] Permission denied: u'/etc/libvirt/qemu.conf'

-- no debconf information