From 8ae56f3fe7c80df35f810632aaccca0874adc2a3 Mon Sep 17 00:00:00 2001
From: seantywork <seantywork@gmail.com>
Date: Tue, 10 Jun 2025 12:29:47 +0900
Subject: [PATCH] gre

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index bb22913..e754ff3 100644
--- a/README.md
+++ b/README.md
@@ -2925,6 +2925,21 @@ ip netns exec vnet ip xfrm policy add \
 
 
 
+```
+
+
+```shell
+# gre
+
+
+sudo sysctl -w net.ipv4.ip_forward=1
+
+sudo ip tunnel add gre1 mode gre remote <HOST_B_IP> local <HOST_A_IP> ttl 25
+
+sudo ip addr add <HOST_A_PRIV_IP> dev gre1
+
+sudo ip link set gre1 up
+
 ```
 
 # NFTABLES NFT
-- 
2.43.0