> For the complete documentation index, see [llms.txt](https://kawsing.gitbook.io/opensystem/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kawsing.gitbook.io/opensystem/andoid-shou-ji/untitled-4/bu-neng-ping-de-zhu-ji-shi-yong-arping.md).

# 不能ping的主機，使用 arping

某些機器不開放ping，可改用arping，從layer2去做，就可以ping到了