choasd not working for network fault

[xxmy0825]

1. unzip chaosd binary from chaosd-latest-linux-adm64.tar.gz
   chaosd version
   Chaosd Version: version.Info(GitVersion:"v1.4.0", GitCommit:"19a157239.......", BuildDate:"2023-02-08T09:03:38Z", GoVersion:"go1.18.2", Compiler:"gc", Platform:"linux/amd64")

2. cp chaosd to /usr/bin, which is the default execution path.

3. inject network fault, and reports success.sudo chaosd attack network delay --device eth0 --ip 192.168.1.100 --latency 100ms

4. verify the result from another machine,
   ping 192.168.1.100, which turns out that there is no any delay.
   64 bytes from 192.168.1.100: icmp_seq=1 ttl=64 time=0.421ms
   64 bytes from 192.168.1.100: icmp_seq=2 ttl=64 time=0.479ms
   64 bytes from 192.168.1.100: icmp_seq=3 ttl=64 time=0.392ms
   ......

5. check the tc rules, it seems that it already adds a rule.
   sudo tc qdisc shwo dev eth0
   qdisc netem 5: parent 1:4 limit 1000 delay 100.0ms

6. not sure what's going on. any suggestions?