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KVM Qemu libvirtd virtual bridged with bond advanced-alb

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Hello.

Recently I started to use qemu-kvm for virtualisation.

I've setup a bridged network and use it in virtual machine:

<network>
   <name>default</name>
   <forward mode='bridge'/>
   <bridge name='virbr0' />
</network>

<domain type='kvm'>
   <name>test</name>
   <os>
     <type arch='x86_64' machine='pc-1.1'>hvm</type>
     <boot dev='network'/>
     <boot dev='hd'/>
   </os>
   <devices>
     <interface type='bridge'>
       <mac address='52:54:00:3f:69:98'/>
       <source bridge='br0'/>
       <model type='e1000'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' 
function='0x0'/>
     </interface>
   </devices>
</domain>


When the bond used in the bridge setup is set to 802.3ad, network in 
guests work ok. When I use bridge mode advanced-alb, network in guests 
works for some time then starts to timeout connections.

What could be the conflict of qemu with advanced-alb mode?

This is my specifications:
Linux 3.2.0-4-amd64 #1 SMP Debian 3.2.73-2+deb7u3 x86_64 GNU/Linux

auto eth0
iface eth0 inet manual

auto eth1
iface eth1 inet manual

auto bond0
iface bond0 inet manual
     # load balancing and fault tolerance
     bond-slaves eth0 eth1
     bond-mode 802.3ad
     #bond-mode balance-alb
     bond-miimon 100
     bond-downdelay 200
     bond-updelay 200
     up ip link set bond0 mtu 9000

auto br0
iface br0 inet static
     bridge_ports bond0
     bridge_stp off
     bridge_fd 0
     #bridge_maxage 0
     bridge_ageing 0
     bridge_maxwait 0
     up ip link set br0 mtu 9000

I've skipped adress/mask specification.

I've tried to enable stp, change mtu, change delay. Nothing helps. Same 
configuration in interfaces, I change only `bond-mode`. With `bond-mode 
802.3ad` everything works ok. With `bond-mode advanced-alb` guest have 
network problems. The host system does not have any network problem in 
any mode.

Thank you

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KVM Qemu libvirtd virtual bridged with bond advanced-alb Mimiko <vbvbrj@gmail.com> - 2016-04-16 16:10 +0200

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