AT_CHECK([ovs-vsctl --no-wait init])
dnl Start ovs-vswitchd.
- AT_CHECK([ovs-vswitchd --detach --pidfile --enable-dummy --disable-system --log-file], [0], [], [stderr])
+ AT_CHECK([ovs-vswitchd --detach --pidfile --enable-dummy --disable-system --log-file -vvconn], [0], [], [stderr])
AT_CAPTURE_FILE([ovs-vswitchd.log])
AT_CHECK([[sed < stderr '
/vlog|INFO|opened log file/d