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 -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. 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. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1404278/+subscriptions