dmesg这是主机上的输出，由于某种原因，在虚拟机运行一段时间后，它们的网络开始每隔 15 秒中断一次。
主机正在运行最新版本的 Fedora 服务器，我有 1 个运行 Debian 的虚拟机和 1 个运行 Fedora 服务器。两人都经历过被淘汰。
[121918.311653] r8169 0000:05:00.0 enp5s0: link down
[121918.311695] workingbridge0: port 4(enp5s0) entered disabled state
[121920.679189] r8169 0000:05:00.0 enp5s0: link up
[121920.679206] workingbridge0: port 4(enp5s0) entered blocking state
[121920.679210] workingbridge0: port 4(enp5s0) entered listening state
[121927.860286] r8169 0000:05:00.0 enp5s0: link down
[121927.860321] workingbridge0: port 4(enp5s0) entered disabled state
[121930.705401] r8169 0000:05:00.0 enp5s0: link up
[121930.705419] workingbridge0: port 4(enp5s0) entered blocking state
[121930.705424] workingbridge0: port 4(enp5s0) entered listening state
[121945.905176] workingbridge0: port 4(enp5s0) entered learning state
[121955.704447] r8169 0000:05:00.0 enp5s0: link down
[121955.704489] workingbridge0: port 4(enp5s0) entered disabled state
[121958.555435] r8169 0000:05:00.0 enp5s0: link up
[121958.555451] workingbridge0: port 4(enp5s0) entered blocking state
[121958.555454] workingbridge0: port 4(enp5s0) entered listening state
[121974.062092] workingbridge0: port 4(enp5s0) entered learning state
[121989.420397] workingbridge0: port 4(enp5s0) entered forwarding state
[121989.420405] workingbridge0: topology change detected, propagating
答案1
最有可能的是电缆损坏。寻找是否有狗咀嚼它，或是否有其他物理损伤。
也有可能是网卡坏了，或者是另一端的交换机端口坏了。
您应该关闭硬件，直到隔离出有缺陷的部分。