diff --git a/site.conf b/site.conf
index d3d0cbd..a0ee6b4 100644
--- a/site.conf
+++ b/site.conf
@@ -4,7 +4,7 @@
     site_code = 'tdf',
     opkg_repo = 'http://openwrt.draic.info/barrier_breaker/14.07/%S/packages',
     prefix4 = '10.188.0.0/16',
-    prefix6 = 'fda0:747e:ab29:7405::/64',
+    prefix6 = '2a03:2260:121::/64',
     timezone = 'CET-1CEST,M3.5.0,M10.5.0/3', -- Europe/Berlin
     ntp_servers = {
         'ntp1.infra.fftdf',