diff --git a/.gitignore b/.gitignore
index 8780e93..dd2c961 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 # Generated by Cargo
 # will have compiled files and executables
 target/
+.idea/
 
 Cargo.lock
 # These are backup files generated by rustfmt
diff --git a/Cargo.toml b/Cargo.toml
index d36b088..62302ec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rust_util"
-version = "0.6.29"
+version = "0.6.30"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "Hatter's Rust Util"
diff --git a/src/util_net.rs b/src/util_net.rs
index dc624fe..02e0d61 100644
--- a/src/util_net.rs
+++ b/src/util_net.rs
@@ -5,7 +5,7 @@ use crate::XResult;
 
 const DEFAULT_LISTEN_ADDR: [u8; 4] = [127, 0, 0, 1];
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialOrd, PartialEq, Ord, Eq)]
 pub enum IpAddress {
     Ipv4([u8; 4]),
 }