子网掩码对照表 26位掩码对应的子网掩码为255.255.255.192，可用IP个数为62个，需要注意配置的时候在这个范围里面 参考文档： https://mp.weixin.qq.com/s?__biz=MzI4NDM5NzE4Ng==&mid=2247484086&idx=1&sn=2251b9b95521cef638d25735bc095390&chksm=ebfd595bdc8ad04d8bf3d62df0a28ded2bb1c473aa58b4c7db2a7819ddfe192ac37a611bb146&mpshare=1&scene=23&srcid=1108LXTDs2kl0afIMHftOKa9 https://mp.weixin.qq.com/s?__biz=MzAwNTM5Njk3Mw==&mid=2247487840&idx=1&sn=9376756065395e9f1d91321860da9770&chksm=9b1c11e2ac6b98f4e1ebe0c6ec5815e0cd69c9254bb3fba68e4083ca7406fb56c3019391fd8d&mpshare=1&scene=23&srcid=&sharer_sharetime=1578974820414&sharer_shareid=e3aed5c2fdec06d648a99b41c36fe174#rd LVS 工作原理图文讲解，非常详细
