Comment 4 for bug 1554950

1550632 was merged at R2.21 build 30, but this issue has been seen on my setup.
I did fping to other VM located on other compute node and confirmed ARP packet that set Destination MAC address was unicast MAC was not correctly processed on vRouter.
See vm2_ping.pcap. VM sent three unicast ARP packets (#97,100,103), but VM didn't get their reply.
After that, VM sent Broadcast ARP packets, then VM got its reply.

root@contrail-07:~# contrail-version
Package Version Build-ID | Repo | Package Name
-------------------------------------- ------------------------------ ----------------------------------
contrail-fabric-utils 2.21.2-30 30
contrail-install-packages 2.21.2-30~juno 30
contrail-lib 2.21.2-30 30
contrail-nodemgr 2.21.2-30 30
contrail-nova-vif 2.21.2-30 30
contrail-openstack-vrouter 2.21.2-30 30
contrail-setup 2.21.2-30 30
contrail-utils 2.21.2-30 30
contrail-vrouter-3.13.0-40-generic 2.21.2-30 30
contrail-vrouter-agent 2.21.2-30 30
contrail-vrouter-common 2.21.2-30 30
contrail-vrouter-init 2.21.2-30 30
contrail-vrouter-utils 2.21.2-30 30
nova-common 1:2014.2.3-0ubuntu1~cloud0.3contrail30
nova-compute 1:2014.2.3-0ubuntu1~cloud0.3contrail30
nova-compute-kvm 1:2014.2.3-0ubuntu1~cloud0.3contrail30
nova-compute-libvirt 1:2014.2.3-0ubuntu1~cloud0.3contrail30
python-contrail 2.21.2-30 30
python-contrail-vrouter-api 2.21.2-30 30
python-neutronclient 1:2.3.8-0ubuntu1~cloud0.2contrail30
python-nova 1:2014.2.3-0ubuntu1~cloud0.3contrail30
python-opencontrail-vrouter-netns 2.21.2-30 30