无法将Oracle虚拟机主机ping到来宾

Question

我在主机（nn1）上的Oracle Vbox中安装了3个来宾服务器。（访客服务器Dn1、Dn2和Dn3）并且主机是nn1。

我可以从这些Guest的ping nn1，但无法从主机nn1 ping Guest。当我试图ping来宾时，主机出现以下错误。请告诉我一个与来自主机的来宾建立连接的解决方案。提前谢谢。

 [root@nn1 ~]# ping Dn1
    PING Dn1 (10.88.12.5) 56(84) bytes of data.
    From 10.88.12.0 icmp_seq=1 Destination Host Unreachable  
    From 10.88.12.0 icmp_seq=2 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=3 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=5 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=6 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=7 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=9 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=10 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=11 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=13 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=14 Destination Host Unreachable

    [root@nn1 ~]# ping Dn2
    PING Dn2 (10.88.13.5) 56(84) bytes of data.
    From 10.88.12.0 icmp_seq=1 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=2 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=3 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=5 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=6 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=7 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=10 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=11 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=13 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=14 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=15 Destination Host Unreachable
   [root@nn1 ~]# ping Dn3
    PING Dn3 (10.88.14.5) 56(84) bytes of data.
    From 10.88.12.0 icmp_seq=2 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=3 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=4 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=5 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=6 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=7 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=9 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=10 Destination Host Unreachable
    From 10.88.12.0 icmp_seq=11 Destination Host Unreachable

Answer 1

问题是路由定义重复。

删除vboxnet0以删除路由和NIC，这样数据包就不会被"捕获"。