I was running into a bunch of problems with KVM bridging and Ubuntu Bonding (LACP) but I was able to resolve this by using the following network config:

Printout from /etc/network/interfaces

LACP Bonding Image

LACP Bonding


# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# Child Networking interfaces
auto eth0
iface eth0 inet manual
bond-master bond0
bond-primary eth0

auto eth1
iface eth1 inet manual
bond-master bond0

#Bond mode load-balancing LACP fast
auto bond0
iface bond0 inet manual
bond-mode 4
bond-miimon 1000
bond-lacp-rate 1
bond-slaves eth0 eth1

#Bridged networking interfaces
auto br0
iface br0 inet static
# dns-* options are implemented by the resolvconf package, if installed
dns-search nertwork.com
bridge_ports bond0
bridge_stp off
bridge_fd 0
bridge_maxwait 0



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