WAIT! I was too fast on reply about Trusty...

On Trusty with Cloud Archive Liberty enabled, and even after this:

update-alternatives --set ovs-vswitchd /usr/lib/openvswitch-switch-dpdk
/ovs-vswitchd-dpdk

And this:

# grep DPDK_OPTS /etc/default/openvswitch-switch 
DPDK_OPTS='--dpdk -c 0x1 -n 4'

The command:

service openvswitch-switch stop
service openvswitch-switch start

 Does NOT bring "ovs-vswitchd" with "dpdk" options!

 So, this test with Trusty is invalid.

 I don't know how to enable OVS with DPDK on Trusty when with Cloud
Archive Liberty. The procedure might be different.

 I'll keep researching about this topic...

Cheers!
Thiago

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https://bugs.launchpad.net/bugs/1568627

Title:
  OpenvSwitch with DPDK brings all VirtIO NICs down, software reboot
  also doesn't work.

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