有一个问题我找不到答案。我有典型的 OpenVPN 设置 - 1 个服务器，子网为 10.8.0.0/24，1 个客户端，地址为 10.8.0.5。无论从服务器到客户端的连接是否建立，当我尝试 ping 不在 VPN 子网中的任何内容时，我都会收到重复信息，例如：
root@openvpn:~# ping google.com
PING google.com (216.58.209.46) 56(84) bytes of data.
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=1 ttl=50 time=9.06 ms
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=1 ttl=49 time=9.08 ms (DUP!)
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=2 ttl=50 time=14.0 ms
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=2 ttl=49 time=14.0 ms (DUP!)
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=3 ttl=50 time=8.67 ms
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=3 ttl=49 time=8.69 ms (DUP!)
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=4 ttl=50 time=17.9 ms
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=4 ttl=49 time=18.0 ms (DUP!)
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=5 ttl=50 time=23.8 ms
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=5 ttl=49 time=23.8 ms (DUP!)
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=6 ttl=50 time=9.56 ms
64 bytes from waw02s05-in-f14.1e100.net (216.58.209.46): icmp_seq=6 ttl=49 time=9.59 ms (DUP!)
我的问题是 - 这是正常的吗？或者客户端或服务器端是否有一些配置需要纠正？