More details on what is needed:
# strace ovs-appctl dpctl/dump-conntrack zone=1 2>&1| egrep "open\(|connect\("| egrep -v "/etc|/lib" open("/var/run/openvswitch/ovs-vswitchd.pid", O_RDWR) = 3 connect(3, {sa_family=AF_LOCAL, sun_path="/var/run/openvswitch/ovs-vswitchd.1507.ctl"}, 45) = 0
More details on what is needed:
# strace ovs-appctl dpctl/dump- conntrack zone=1 2>&1| egrep "open\(|connect\("| egrep -v "/etc|/lib" var/run/ openvswitch/ ovs-vswitchd. pid", O_RDWR) = 3 AF_LOCAL, sun_path= "/var/run/ openvswitch/ ovs-vswitchd. 1507.ctl" }, 45) = 0
open("/
connect(3, {sa_family=