root/sbin/ipf/libipf/vtof.c
#include "ipf.h"

int
vtof(int version)
{
#ifdef USE_INET6
        if (version == 6)
                return (AF_INET6);
#endif
        if (version == 4)
                return (AF_INET);
        if (version == 0)
                return (AF_UNSPEC);
        return (-1);
}