[Qemu-devel] [Bug 1404278] Re: tap connections not working on windows host

[timsoft]

it is working now. using the following config.
"c:\program files\qemu\qemu-system-i386.exe" -cpu qemu32 -m 3G -drive 
file="c:\\data\\images\\slack14.2_32bit_base.qcow2",format=qcow2 -cdrom 
"c:\\data\\images\\slackware-14.2-install-dvd.iso" -boot c -net 
nic,macaddr=02:00:00:11:11:14,model=i82551 -net tap,ifname=tap0 -k en-gb 
-display vnc=:2 -monitor telnet:localhost:7101,server,nowait,nodelay
which I took from a linux qemu vm of mine, and just modified the bridge to 
point to tap (it didn't like -net bridge,br=br0 (where br0 was my windows 
bridge - I guess there is no bridge helper on windows qemu - so I changed it to 
-net tap,ifname=tap0 (which was already configured as part of the bridge)
I was able to ping the lan and also the wan (internet) so it looks ok now. This 
time i did specify a different virtual net card which may have made a 
difference, but if it works, that is the main thing.

** Changed in: qemu
       Status: Incomplete => Fix Released

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https://bugs.launchpad.net/bugs/1404278

Title:
  tap connections not working on windows host

Status in QEMU:
  Fix Released

Bug description:
  using latest qemu 2.2.0 64bit for windows host (installed from
  qemu-w64-setup-20141210.exe obtained from http://qemu.weilnetz.de/w64/
  ),OpenVPN 2.6.3-I601 64bit tap adapter named tap01 and calling qemu
  using the following.

  qemu-system-x86_64.exe -m 512 -net nic -net tap,ifname=tap01 -hda
  "c:\\data\\images\\test.img"

  where the image contains a slackware 14.0 64bit install.
  The tap is bridged with the real network adapter and the bridge is given an 
ip of 10.1.1.41 (which works as the ip for the windows host). The tap adapter 
(in network connections) shows connected when the qemu vm is running. inside 
the vm, the network is given an ip of 10.1.1.143 (the netmask and default 
gateway are the same for the virtual and real pc).
  fault.
  The vm cannot see the rest of the local network or visa-versa. This used to 
work in early (0.9 32bit) versions of qemu.

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