ICMPV6_NOT_NEIGHBOUR 523 net/ipv6/ip6_output.c ICMPV6_NOT_NEIGHBOUR, 0, skb->dev); ICMPV6_NOT_NEIGHBOUR 193 net/ipv6/netfilter/ip6t_REJECT.c send_unreach(net, skb, ICMPV6_NOT_NEIGHBOUR, par->hooknum); ICMPV6_NOT_NEIGHBOUR 273 net/ipv6/xfrm6_tunnel.c case ICMPV6_NOT_NEIGHBOUR: