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Sunc
[root@master ~]# cdebug exec --namespace=kube-system -it pod/coredns-5cd85ddb9f-ls5dl Debugger container name: cdebug-47f86597 Starting debugger container... Waiting for debugger container... Attaching to debugger container... If you don't see a command prompt, try...
在进行数据包追踪过程发现,可以列出原始的默认的链表信息,但是对于自定义的链表丢弃数据包的时候没有了详细信息,例如可以追踪到INPUT链,但是时间丢弃数据包是在INPUT链下面的INPUT_direct链,输出没有显示到INPUT_direct. 
make Auto-detecting system features: ... libelf: [ on ] ... lzma: [ on ] ... zlib: [ on ] ... btf-vmlinux: [ on ] ... demangle: [ on ] DESCEND...