+ - Add support for 802.1D spanning tree (STP).
+ - Fragment handling extensions:
+ - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
+ fields are made available for matching in fragments with
+ offset 0.
+ - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
+ via "ip_frag" in ovs-ofctl).
+ - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
+ fragment handling policy.