For OVS the change to the config is ready for review.
On update a user of the former DPDK_OPTS will get the common:

Configuration file '/etc/default/openvswitch-switch'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:

And when looking at it is is obvious what was going on for the user:
--- /etc/default/openvswitch-switch     2016-10-04 10:06:19.043458386 +0000
+++ /etc/default/openvswitch-switch.dpkg-new    2016-10-04 09:07:08.000000000 
+0000
@@ -7,5 +7,13 @@
 # a suitable place to specify --ovs-vswitchd-wrapper=valgrind.
 # OVS_CTL_OPTS=
 
-# DPDK options - see /usr/share/doc/openvswitch-common/INSTALL.DPDK.md.gz
-DPDK_OPTS='--dpdk -c 0x1 -n 4'
+# DPDK options are now configured via ovs-vsctl/ovsdb, see:
+# - /usr/share/doc/openvswitch-common/INSTALL.DPDK.md.gz
+# - /usr/share/doc/openvswitch-common/INSTALL.DPDK-ADVANCED.md.gz
+# dpdk-extra is the fallback for users who formerly set e.g.
+#  '--vhost-owner libvirt-qemu:kvm --vhost-perm 0664'
+# here or any other DPDK EAL arguments via DPDK_OPTS which are not covered by
+# the default switches provided by ovs-vsctl.
+# This is an arbitrary string that will get appended to the EAL commandline.
+# For more on the new ovsdb based configuration of DPDK features, see:
+# `man ovs-vswitchd.conf.db`

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https://bugs.launchpad.net/bugs/1625542

Title:
  --vhost-owner --vhost-perm no more transferred to DPDK EAL commandline

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