[Fedora-xen] Re: Windows guest networking
On Sat, Feb 11, 2017 at 11:58:10AM -0500, W. Michael Petullo wrote:
>> Is anyone running a Windows HVM guest with networking? I
recently tried
>> to connect a Windows 7 HVM guest to my network using vif-nat. For some
>> reason, the setup does not work. Oddly, Dom0 lists the vif interface
>> associated with the guest as "NO-CARRIER" even though the DomU
Windows
>> guest seems to recognize its virtual network interface (RTL8139C+).
>>
>> I have no problem with a similarly configured guest running Linux.
>>
>> I am using:
>>
>> xen-4.7.1-6.fc25.x86_64
>>
>> The guest configuration is:
>>
>> name = "windows64"
>> memory = 2048
>> vcpus = 1
>> builder = "hvm"
>> altp2mhvm = 1
>> vif = [ "script=vif-nat,ip=10.0.0.2/32,gatewaydev=wlp3s0" ]
>> disk = [ "tap2:tapdisk:aio:/path/to/disk-windows64.img,xvda,w",
>> "tap2:tapdisk:aio:/path/to/spare-vfat.img,xvdb,w" ]
>> serial = "pty"
>> sdl = 1
> Does it work if you use the default vif bridge?
It does indeed. I switched to vif-bridge, and everything worked. I am
a little suprised by this, because I thought from the point of view
of Xen both of these configurations were rather similar; I thought the
difference was in the Dom0 network configuration.
Yeah it sounds like vif-nat is broken in that version of Xen, or on Fedora..
The reason I prefer vif-nat is that it makes using my WiFi interface
easier. I have to go through some trouble to bridge vif/Ethernet to WiFi.
Well, you can still easily use NAT by setting up a dedicated bridge, which is set to NAT
the traffic (outside of Xen, on your distro networking scripts/tools). That way xen uses
vif-bridge to connect to the "nat-bridge", and you get NAT for the VM, and it
works perfectly OK with wifi or whatever connection you have available in dom0.
Easiest way is to use the "virbr0" provided by libvirt networking.
I am left with another question: does this mean there is a bug in
Xen
or the vif-nat script? If there is a bug, what else could I provide to
help fix it?
You probably should report it to xen-devel.
--
Mike
:wq
-- Pasi