Mark BROKEN, it doesn't compile any more even on FreeBSD 11

cc -DNDEBUG -O2 -pipe -fstack-protector -fno-strict-aliasing -fPIC -I/usr/local/include/python2.7 -c netif.c -o build/temp.freebsd-11.0-CURRENT-amd64-2.7/netif.o -g
netif.c:31106:43: error: use of undeclared identifier 'LAGG_PROTO_ETHERCHANNEL'

__pyx_t_4 = __Pyx_PyInt_From_lagg_proto(LAGG_PROTO_ETHERCHANNEL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 426; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                                        ^

Reported by: pkg-fallout