feat: add __network/ipnet-demo

__network/ipnet-demo/src/main.rs

@@ -0,0 +1,16 @@
+use std::net::Ipv4Addr;
+use std::str::FromStr;
+use ipnet::{Ipv4Net, Ipv6Net};
+
+fn main() {
+    let net4 = Ipv4Net::from_str("10.1.1.0/24").unwrap();
+    let net6 = Ipv6Net::from_str("fd00::/24").unwrap();
+
+    println!("{:?}", net4);
+    println!("{:?}", net6);
+
+    let ip: Ipv4Addr = "192.168.0.1".parse().unwrap();
+    println!("{}", net4.contains(&ip));
+    let ip: Ipv4Addr = "10.1.1.1".parse().unwrap();
+    println!("{}", net4.contains(&ip));
+}