Re: [libvirt-users] net interface direct - no IP communication between guest & host
On 25/10/17 08:05, Daniel P. Berrange wrote:
On Tue, Oct 24, 2017 at 03:52:52PM +0100, lejeczek wrote:
> hi everyone
>
> I wonder why, when I attach an interface like this:
>
> virsh # attach-interface --domain win10Ent --type direct --source nm-team
> --config --persistent --model virtio
>
> host cannot ip ping the guest and vice versa, yet guest can ping other
> nodes(outside of its host, connected via phys net via a switch)
>
> Would you know?
>
> I thought maybe routing on the host, so I did:
> $ route add -host 192.168.2.222 dev nm-team
>
> but to no avail.
>
> I wonder if it's lower layer, arp kernel bits?
I expect you'll be hitting this unfortunate gotcha:
https://wiki.libvirt.org/page/TroubleshootMacvtapHostFail
really nice pointer, thanks.
So I changed some bits, NIC for quest now is:
vnet2 bridge 192-168-2-0 virtio
and network is:
<network>
<name>192-168-2-0</name>
<uuid>4e03af62</uuid>
<forward mode='bridge'/>
<bridge name='nm-bridge1'/>
</network>
and the host's bridge(nm-bridge1) comprise of one net-team
device which builds on two phys NICs.
And... the problem remains the same - other hosts/node(via a
switch to which nm-team is connected) can get to the quest
but the host itself cannot(and vice versa)
So no "macvtap" but still does not work.
Regards,
Daniel