if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%d",
&x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7],
&l) == 9) {
if(sscanf(subnetstr, "%hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%d",
&x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7],
&l) == 9) {