Socket::Ifaddr#broadaddr

static VALUE
ifaddr_broadaddr(VALUE self)
{
    struct ifaddrs *ifa = get_ifaddrs(self);
    if ((ifa->ifa_flags & IFF_BROADCAST) && ifa->ifa_broadaddr)
        return rsock_sockaddr_obj(ifa->ifa_broadaddr, rsock_sockaddr_len(ifa->ifa_broadaddr));
    return Qnil;
}