if (tp->tcp) {
sofar = frames * tp->mss;
cpu_to_be32wu((uint32_t *)(tp->data+css+4), // seq
- be32_to_cpupu((uint32_t *)(tp->data+css+4))+sofar);
+ ldl_be_p(tp->data+css+4)+sofar);
if (tp->paylen - sofar > tp->mss)
tp->data[css + 13] &= ~9; // PSH, FIN
} else // UDP