Comment 1 for bug 1547463

This issue happens since DPDK_OPTS parameter is not forwarded to ovs-ctl.

To make it working,
/etc/init/openvswitch-switch.conf should be modified like the following so that DPDK_OPTS parameter can be forwarded to ovs-ctl

if test X"$FORCE_COREFILES" != X; then
set "$@" --force-corefiles="$FORCE_COREFILES"
fi
set "$@" $OVS_CTL_OPTS

# To enable openvswitch-dpdk
if test X"$DPDK_OPTS" != X; then
set "$@" --dpdk-opts="$DPDK_OPTS"
fi

This patch works fine on my machine.