+ #
+ # receive #1 learn, install flow with hard_timeout=10
+ # sleep to ensure the flow installation
+ # (warp, timeout left 8s)
+ # receive #2 the learned flow
+ # (warp, timeout left 6s)
+ # receive #3
+ # (warp, timeout left 4s)
+ # receive #4
+ # (warp, timeout left 2s)
+ # receive #5
+ # (warp, timeout left 0s)
+ # NOTE: OVS does not consider this expired yet. cf. rule_expire()
+ # receive #6
+ # (warp, timeout left -2s)
+ # sleep to ensure flow expiration
+ # receive #7 learn, install flow with hard_timeout=10
+ # sleep to ensure the flow installation
+ # (warp, timeout left 8s)
+ # receive #8
+ # (warp, timeout left 6s)
+ # receive #9
+ # (warp, timeout left 4s)
+ # receive #10
+ # (warp, timeout left 2s)
+ if [[ $i -eq 1 -o $i -eq 7 ]]; then