From c116ca3abf442c931bf9ea870c47cc023bd15a89 Mon Sep 17 00:00:00 2001
From: RenFei <i@renfei.net>
Date: Tue, 28 Mar 2023 09:31:24 +0800
Subject: [PATCH] update README.md

---
 .gitignore |  2 ++
 README.md  | 10 +++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 .gitignore

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..00741cb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.DS_Store
+.idea/
\ No newline at end of file
diff --git a/README.md b/README.md
index 38c0ccb..962778e 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
   <img alt="RenFeiBlog" src="./lib/assets/wordmark.light.png?raw=true" height="34">
 </picture></h1>
 
-My name is **RenFei(任霏)**, and I'm a Java programmer from China.
+My name is **RenFei(任霏)**, and I'm a Java programmer from Mainland China.
 
 ## Navigation
 
@@ -17,3 +17,11 @@ If you speak Chinese, welcome to visit my blog: [www.renfei.net](https://www.ren
 ### BT(BitTorrent) Tracker Service
 
 I run a public BitTorrent Tracker server: [http://tracker.renfei.net:8080/announce](http://tracker.renfei.net:8080/announce), which assists in communication between peers using the BitTorrent protocol, helps speed up BitTorrent downloads.
+
+### Internet IP Address Query Service
+
+Since the network may use multi-layer NAT address translation, IP address query for Internet egress:
+
+* [ip.renfei.net](http://ip.renfei.net) : IPv4 and IPv6, IPv6 is generally preferred, depending on the DNS resolution of the client.
+* [ipv4.renfei.net](http://ipv4.renfei.net) : IPv4 Only.
+* [ipv6.renfei.net](http://ipv6.renfei.net) : IPv6 Only.