java - linux对于$route -n命令查看路由表的困惑？

Question

{代码...} 对于0.0.0.0有一点不了解。这是查到的对于0.0.0.0的解释： If used in a routing table, it identifies the default gateway; a route to 0.0.0.0 is the default one, i.e. the one used when there i...

黄舟 · Answer

Question 1: 0.0.0.0 represents matching all target addresses, but pay attention to the description of the default gateway and the network card in the the one used when there is not any more specific route available to a destination address,一般路由匹配要符合掩码最长匹配原则，而默认路由的掩码是最短的，它只有在没有其他匹配条目的时候才会被选择。
问题二：这两条记录中的gateway并没有意义，Flags那一列中有G时才会使用Gateway。这两条路由并没有这样的标志，由于它们是本地的，匹配这些条目的数据包会直接通过Iface column is sent out.

Php8, I'm coming too

Learn website layout in 30 minutes

Shangguan Oracle Beginner to Proficient Video Tutorial

Your first line of UNI-APP code

Flutter from scratch to app launch

Brother Lian New Linux Video Tutorial

AXURE 9 Video Tutorial (Suitable for Product Manager Interactive Product Design UI)

Zero Basic Proficiency PS Video Tutorial

16 day UI video tutorial to get you started

PS Techniques and Slicing Techniques Video Tutorial

Alibaba Cloud Environment Construction and Project Launch Video Tutorial

Overview of Computer Networks - Basic Knowledge that Programmers Must Master

Essential Tutorial for Programmers - HTTP Protocol Explanation

Websocket Video Tutorial