reassign 569145 bird --
The RTF_CLONING constant is missing in net/route.h (there is "unused, was RTF_CLONING" note instead), although it is defined in FreeBSD headers, noted in FreeBSD manpage and i don't find any notes indicating that is obsolete.
It is part of FreeBSD 7.x headers, but it is not part of FreeBSD 8.0 headers, take a look at FreeBSD 8.0 release http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/net/route.h?rev=1.85.2.1.2.1;content-type=text%2Fplain We just followed plain FreeBSD, sorry. Petr