ICMP_HOST_UNREACH
icmp_ndo_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0);
icmp_ndo_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0);
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0);
case ICMP_HOST_UNREACH:
nf_send_unreach(skb, ICMP_HOST_UNREACH, hook);
__icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_UNREACH, 0, &parm);
code = ICMP_HOST_UNREACH;
code == ICMP_HOST_UNREACH)));
(code == ICMP_NET_UNREACH || code == ICMP_HOST_UNREACH))
rel_code = ICMP_HOST_UNREACH;
[NFT_REJECT_ICMPX_HOST_UNREACH] = ICMP_HOST_UNREACH,