74a75
> struct cksum_vec vec[1];
104c105,107
< if (in_cksum((u_short *)mob, osp ? 12 : 8, 0)!=0) {
---
> vec[0].ptr = (const u_int8_t *)(void *)mob;
> vec[0].len = osp ? 12 : 8;
> if (in_cksum(vec, 1)!=0) {