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[Qemu-devel] [Bug 1395217] Re: Networking in qemu 2.0.0 and beyond is no


From: Ralf Münk
Subject: [Qemu-devel] [Bug 1395217] Re: Networking in qemu 2.0.0 and beyond is not compatible with Open Solaris (Illumos) 5.11
Date: Thu, 30 Apr 2015 14:01:47 -0000

Hello to all, I confirm this bug in qemu.

12 different Linux versions/distributions and 1 Windows 7 VM  are running fine 
without any networking issue. 
Solaris 5.11 Version 11.2 can be installed (text version) and is running but 
network is broken.

DHCPOFFER will not be received by Solaris 5.11 VM's (RX not working)  for 
Automatic profile.
If DefaultFixed profile is online there is the same behavior. 
Arp table on Solaris containes the own entry which is completed.
If I ping another host, the IP will be added but no MAC, which indicates that 
also no ARP package will be received.  

I could NOT get it working with disabled x2apic (tested with different CPU 
types).
Is there something additional which has to be changed?

qemu version is 2.0.0+dfsg-2ubuntu1.10 @ ubuntu 14.04.2 LTS, Kernel
3.13.0-49-generic.

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https://bugs.launchpad.net/bugs/1395217

Title:
  Networking in qemu 2.0.0 and beyond is not compatible with Open
  Solaris (Illumos) 5.11

Status in QEMU:
  New

Bug description:
  The networking code in qemu in versions 2.0.0 and beyond is non-
  functional with Solaris/Illumos 5.11 images.

  Building 1.7.1, 2.0.0, 2.0.2, 2.1.2,and 2.2.0rc1with the following
  standard Slackware config:

  # From Slackware build tree . . . 
  ./configure \
    --prefix=/usr \
    --libdir=/usr/lib64 \
    --sysconfdir=/etc \
    --localstatedir=/var \
    --enable-gtk \
    --enable-system \
    --enable-kvm \
    --disable-debug-info \
    --enable-virtfs \
    --enable-sdl \
    --audio-drv-list=alsa,oss,sdl,esd \
    --enable-libusb \
    --disable-vnc \
    --target-list=x86_64-linux-user,i386-linux-user,x86_64-softmmu,i386-softmmu 
\
    --enable-spice \
    --enable-usb-redir 

  
  And attempting to run the same VM image with the following command (or via 
virt-manager):

  macaddress="DE:AD:BE:EF:3F:A4"

  qemu-system-x86_64 nex4x -cdrom /dev/cdrom -name "Nex41" -cpu Westmere
  -machine accel=kvm -smp 2 -m 4000 -net nic,macaddr=$macaddress  -net 
bridge,br=b
  r0 -net dump,file=/usr1/tmp/<FILENAME> -drive file=nex4x_d1 -drive 
file=nex4x_d2
   -enable-kvm

  Gives success on 1.7.1, and a deaf VM on all subsequent versions.

  Notable in validating my config, is that a Windows 7 image runs
  cleanly with networking on *all* builds, so my configuration appears
  to be good - qemu just hates Solaris at this point.

  Watching with wireshark (as well as pulling network traces from qemu
  as noted above) it appears that the notable difference in the two
  configs is that for some reason, Solaris gets stuck arping for it's
  own interface on startup, and never really comes on line on the
  network.  If other hosts attempt to ping the Solaris instance, they
  can successfully arp the bad VM, but not the other way around.

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