When performing a network fault on a pod,it is ineffective if the port is specified.

[lqxandxl]

When performing a network fault on a pod, it is effective if the port is not specified, but it is ineffective if the port is specified. For example, injecting a network delay fault on the 3306 port of MySQL will not work, but if the network delay fault is injected indiscriminately on the MySQL pod without specifying a specific port, it will work.