https://serverfault.com/questions/696988/difference-between-genmask-and-netmask https://zhuanlan.zhihu.com/p/61805945 https://www.gitdig.com/post/2019-05-18-route-command/ 黑洞@heidsoft Github:https://github.com/heidsoft 微博:http://weibo.com/liuganbin 热衷云计算和大数据 关注CloudStack,OpenStack,Linux c/c++/python/java 关...