nf_reject_iphdr_put
static struct iphdr *nf_reject_iphdr_put(struct sk_buff *nskb,
niph = nf_reject_iphdr_put(nskb, oldskb, IPPROTO_ICMP,
nf_reject_iphdr_put(nskb, oldskb, IPPROTO_TCP,
niph = nf_reject_iphdr_put(nskb, oldskb, IPPROTO_TCP,