我有一台 Centos 8 Linux 服务器，它会定期丢失网络连接。
ping 它的地址，会失败一段时间并自动恢复。从我的本地机器或另一个远程服务器 ping 都有相同的结果，所以我确定问题出在服务器端。
什么原因造成这种情况？
PING 172.31.114.131 (172.31.114.131) 56(84) bytes of data.
64 bytes from 172.31.114.131: icmp_seq=1 ttl=60 time=0.536 ms
64 bytes from 172.31.114.131: icmp_seq=2 ttl=60 time=0.642 ms
64 bytes from 172.31.114.131: icmp_seq=3 ttl=60 time=0.580 ms
64 bytes from 172.31.114.131: icmp_seq=4 ttl=60 time=0.512 ms
64 bytes from 172.31.114.131: icmp_seq=5 ttl=60 time=0.596 ms
64 bytes from 172.31.114.131: icmp_seq=6 ttl=60 time=0.547 ms
64 bytes from 172.31.114.131: icmp_seq=7 ttl=60 time=0.525 ms
64 bytes from 172.31.114.131: icmp_seq=8 ttl=60 time=0.509 ms
64 bytes from 172.31.114.131: icmp_seq=9 ttl=60 time=0.524 ms
64 bytes from 172.31.114.131: icmp_seq=10 ttl=60 time=0.508 ms
64 bytes from 172.31.114.131: icmp_seq=11 ttl=60 time=0.445 ms
64 bytes from 172.31.114.131: icmp_seq=12 ttl=60 time=0.512 ms
64 bytes from 172.31.114.131: icmp_seq=13 ttl=60 time=0.483 ms
64 bytes from 172.31.114.131: icmp_seq=14 ttl=60 time=0.504 ms
64 bytes from 172.31.114.131: icmp_seq=15 ttl=60 time=0.503 ms
64 bytes from 172.31.114.131: icmp_seq=16 ttl=60 time=0.490 ms
------------- hangs ------------------------------------------
64 bytes from 172.31.114.131: icmp_seq=310 ttl=60 time=1.35 ms
64 bytes from 172.31.114.131: icmp_seq=311 ttl=60 time=0.487 ms
64 bytes from 172.31.114.131: icmp_seq=312 ttl=60 time=0.495 ms
64 bytes from 172.31.114.131: icmp_seq=313 ttl=60 time=0.556 ms
64 bytes from 172.31.114.131: icmp_seq=314 ttl=60 time=0.492 ms
64 bytes from 172.31.114.131: icmp_seq=315 ttl=60 time=0.544 ms
挂起/恢复循环以固定速率进行，每次 icmp_seq 都会丢失 294。