From 9eedd8fb9d041e0201789c085291d7d674f3a171 Mon Sep 17 00:00:00 2001
From: Sapan Bhatia <gwsapan@gmail.com>
Date: Fri, 3 Apr 2015 10:49:50 -0400
Subject: [PATCH] Reverse traceroute capability... developed in collaboration
 with Ethan Katz-Baset and David Choffnes

---
 root-context/exec/reversetraceroute | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100755 root-context/exec/reversetraceroute

diff --git a/root-context/exec/reversetraceroute b/root-context/exec/reversetraceroute
new file mode 100755
index 0000000..c8c1f57
--- /dev/null
+++ b/root-context/exec/reversetraceroute
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+slice=$1
+xid=`id -u $1`
+
+read magic_signature
+
+delete_cmd='iptables -t mangle -D INPUT -m u32 --u32 "6&0xFF=1 && 4&0x1FFF=0 && 0>>22&0x3C@0>>24=0x0 && 0>>22&0x3C@4='$magic_signature'" -j MARK --set-mark '$xid
+add_cmd='iptables -t mangle -I INPUT -m u32 --u32 "6&0xFF=1 && 4&0x1FFF=0 && 0>>22&0x3C@0>>24=0x0 && 0>>22&0x3C@4='$magic_signature'" -j MARK --set-mark '$xid
+
+eval $delete_cmd
+eval $add_cmd
+
-- 
2.43.0