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

From: hakan <1404278@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1404278] Re: tap connections not working on windows host
Date: Sun, 02 Aug 2020 15:59:04 -0000	[thread overview]
Message-ID: <159638394450.11064.9327137954898121885.malone@chaenomeles.canonical.com> (raw)
In-Reply-To: 20141219153639.25009.84583.malonedeb@wampee.canonical.com

Hi,

I want to run u-boot for x86_64 architecture in windows10 and I am using
qemu-5.0.0, the latest version of qemu. The TAP adapter for Linux (host)
worked successfully and I communicated between u-boot (guest) and Linux
(host), but the result for Windows (host) failed.

I installed the Tap Network Adapter for windows and renamed it to "tap0" . when I ran the qemu with the following command without creating a bridge, u-boot was successfully initialized, but I cannot ping Windows (host).
qemu-system-x86_64.exe -bios u-boot.rom -nographic -device  e1000,netdev=mynet0 -netdev tap,id=mynet0,ifname=tap0

When I check (right click> status) for Tap0 it says No Network Connection.
I terminated qemu and connected tap0 to the internet using the config files I downloaded for OpenVPN.
When I checked tap0 again, I saw "Ipv4: Internet" but when I try to run qemu this way, I get an error like this.

tap: Could not open 'tap0'
qemu-system-x86_64.exe: Device 'tap' could not be initialized

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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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