宿主机虚拟机不能ping通，宿主机Centos7.2 虚拟机Centos7.2，kvm工具

zenganiu_123

Centos7.2宿主机用kvm安装同样是Centos7.2的虚拟机，宿主机虚拟机都可以ping通外网，也能ping通网关，但是宿主机不能ping通虚拟机，
虚拟机不能ping通宿主机。他们的上网方式均为dhcp，模式为桥接(Bridged)模式,宿主机虚拟机均为同一网段，请问宿主机和
虚拟机怎么能够ping通,能够通过socket套接字(TCP和UDP)通信？

宿主机ping虚拟机结果如下：
PING 192.168.21.89 (192.168.21.89) 56(84) bytes of data.
From 192.168.21.63 icmp_seq=1 Destination Host Unreachable
From 192.168.21.63 icmp_seq=2 Destination Host Unreachable
From 192.168.21.63 icmp_seq=3 Destination Host Unreachable
From 192.168.21.63 icmp_seq=4 Destination Host Unreachable
From 192.168.21.63 icmp_seq=5 Destination Host Unreachable
From 192.168.21.63 icmp_seq=6 Destination Host Unreachable
From 192.168.21.63 icmp_seq=7 Destination Host Unreachable
From 192.168.21.63 icmp_seq=8 Destination Host Unreachable

虚拟机ping宿主机结果如下：
PING 192.168.21.63 (192.168.21.63) 56(84) bytes of data.
From 192.168.21.89 icmp_seq=1 Destination Host Unreachable
From 192.168.21.89 icmp_seq=2 Destination Host Unreachable
From 192.168.21.89 icmp_seq=3 Destination Host Unreachable
From 192.168.21.89 icmp_seq=4 Destination Host Unreachable
From 192.168.21.89 icmp_seq=5 Destination Host Unreachable
From 192.168.21.89 icmp_seq=6 Destination Host Unreachable
From 192.168.21.89 icmp_seq=7 Destination Host Unreachable
From 192.168.21.89 icmp_seq=8 Destination Host Unreachable

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