From de4d54aa9709d17024956aee64fbc0ddf7fbbdc1 Mon Sep 17 00:00:00 2001
From: Peter Hedenskog <peter@soulgalore.com>
Date: Thu, 5 Jun 2025 08:52:08 +0200
Subject: [PATCH] Try out ipv6 for tc and pfctl (on localhost)

---
 lib/localHostPfctl.js |  2 +-
 lib/tc.js             | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/lib/localHostPfctl.js b/lib/localHostPfctl.js
index 08daa81..199db65 100644
--- a/lib/localHostPfctl.js
+++ b/lib/localHostPfctl.js
@@ -20,7 +20,7 @@ export async function start(rtt) {
   );
 
   await shell(
-    'echo "dummynet out from any to 127.0.0.1 pipe 1" | sudo pfctl -f -'
+    'echo "dummynet out inet from any to 127.0.0.1 pipe 1\ndummynet out inet6 from any to ::1 pipe 1" | sudo pfctl -f -'
   );
 
   await sudo('pfctl', '-E');
diff --git a/lib/tc.js b/lib/tc.js
index 4debd46..ca509c7 100644
--- a/lib/tc.js
+++ b/lib/tc.js
@@ -74,6 +74,30 @@ async function setup(defaultInterface) {
     'dev',
     'ifb0'
   );
+  await sudo(
+    'tc',
+    'filter',
+    'add',
+    'dev',
+    defaultInterface,
+    'parent',
+    'ffff:',
+    'protocol',
+    'ipv6',
+    'u32',
+    'match',
+    'u32',
+    '0',
+    '0',
+    'flowid',
+    '1:1',
+    'action',
+    'mirred',
+    'egress',
+    'redirect',
+    'dev',
+    'ifb0'
+  );
 }
 
 async function setLimits(up, down, halfWayRTT, packetLoss, indexFace) {