Comment 8 for bug 1595086

Bartosz,

What should be done is having the networking-sfc package to produce /usr/bin/sfc-neutron-openvswitch-agent, and have the sysv-rc/upstart/systemd startup stuff use that binary instead of /usr/bin/neutron-openvswitch-agent. I wrote the full explanation here:

http://lists.openstack.org/pipermail/openstack-dev/2016-June/097956.html

This way, there would be no reason to deinstall neutron-openvswitch-agent.

If you really don't want to do this way, then the way to do it is to dpkg-divert the file (see the man page for dpkg-divert), but I wouldn't recommend it.