val add_group : t ‑> OpenFlow0x04.groupType ‑> OpenFlow0x04.bucket list ‑> OpenFlow0x04.groupIdCreates a new group, allocating a fresh ID.
val commit : t ‑> OpenFlow0x04.Message.t listProduces a list of messages to realize the previous add_group and
clear_groups commands, upto the last commit command.
val add_fastfail_group : t ‑> OpenFlow0x04.portId list ‑> OpenFlow0x04.groupIdCreates a new fast fail group which forwards out of the first live port in
* ports and otherwise drops.