libnet-devel will maintain libnet-1.1.x. A limited number of ports currently
support or will require libnet-1.1.x in the future. The API is not backwards
compatible. Unfortunately many ports still require libnet-1.0.x and do not
support the new API (and may never support it). libnet-devel will fill the
gap until the API change settles out and 1.0.x is fully deprecated.