ICMP_NET_UNREACH
case ICMP_NET_UNREACH:
nf_send_unreach(skb, ICMP_NET_UNREACH, hook);
code = ICMP_NET_UNREACH;
(code == ICMP_NET_UNREACH ||
(code == ICMP_NET_UNREACH || code == ICMP_HOST_UNREACH))
return ICMP_NET_UNREACH;
[NFT_REJECT_ICMPX_NO_ROUTE] = ICMP_NET_UNREACH,