From a09231705004102f83236c34f661a1f5fa461e7a Mon Sep 17 00:00:00 2001
From: Philip Hofstetter <phofstetter@sensational.ch>
Date: Mon, 14 Jul 2014 16:47:22 +0200
Subject: [PATCH] be more specific with the fixed math

---
 _posts/2014-07-14-ipv6.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/_posts/2014-07-14-ipv6.md b/_posts/2014-07-14-ipv6.md
index d90f0aa..adf06fe 100644
--- a/_posts/2014-07-14-ipv6.md
+++ b/_posts/2014-07-14-ipv6.md
@@ -122,7 +122,7 @@ Yes. An attacker could port-scan your /64 and try to find the non-temporary
 address, but keep in mind that finding that one address out of 2<sup>64</sup>
 addresses would mean that you have to port-scan 4 billion traditional v4
 internets per attack target (good luck) or randomly guessing with an average
-chance of 1:(2<sup>64</sup>/2) (also good luck).
+chance of 1:2<sup>63</sup> (also good luck).
 
 Even then a personal firewall could block all unsolicited packets from
 non-local prefixes to provide even more security.