DragonFly dfbsd 6.5-DEVELOPMENT #0 (stock INVARIANTS kernel), cc 8.3
netgraph7 stack loaded from freshly built modules:
  /usr/obj/usr/src/sys/netgraph7/netgraph/netgraph.ko (core)
  /usr/obj/usr/src/sys/netgraph7/socket/ng_socket.ko
  /usr/obj/usr/src/sys/netgraph7/vjc/ng_vjc.ko  (compiles sys/net/ppp_layer/slcompress.c)
sysctl net.graph.msg_version: 8 (ng7) / abi_version: 12
note: ng7 and v1 socket modules both claim AF_NETGRAPH; ng7 was tested on a fresh boot with no v1 netgraph loaded.