Comment 18 for bug 1888395

the error you are getting is from the vrouter plugin
did you also update that? from what i can see you usge updated nova.

the vrouter os vif plugin is a third party plugin htat is not part of os-vif or vrouter and you will need to install the correct version of both.

https://launchpad.net/~billy-olsen/+archive/ubuntu/lp1888395-train only contains nova so it will not be sufficent to just enable that to test this.

vrouter-port-control is a command line client that is provided by the vrouter prouduct so the failure that your are seeing are not part of openstack but vrouter and the vrouter integratoin.

this is the code that is failing
https://github.com/tungstenfabric/tf-nova-vif-driver/blob/master/vif_plug_vrouter/vrouter.py#L100-L135

i would guess that the version fo contrail you have deplopyed uses a different set of commandline arguemnts or is otherwise incompatible or broken indepently of the nova issue tracked by this bug.