inet6_rth functions

Hi,

I'm trying to port a tool from solaris 10 to Fedora 7. While running gcc
I get some strange errors. Example app:

include <netinet/in.h>

int main() {
        const int segments = 100;
        inet6_rth_space(IPV6_RTHDR_TYPE_0, segments);

        return 0;
}

While running gcc the following output is created:

> $ gcc -Wall -o test test.c
> test.c: In function ‘main’:
> test.c:5: warning: implicit declaration of function ‘inet6_rth_space’

Under solaris it compiles just fine. Does someone know whats wrong?

cheers,
Stefan