Hi, Im new to IPv6. For explanation what I wanted to do: Get an IPv6 Adress and connect via that to my home server. What I did: Register here, get a tunnel <- I guess thats how I connect somehow ?? I tried to figure out what exactly to do but I get from one acronym to another acronym... Then I was searching to get my tunnel up an running. Well Im still working on that: I wanted to install the tunnel on my CentOs 7 server... I downloaded aiccu: Then I wanted to compile it: [root@xxx aiccu]# make Building : aiccu - Automatic IPv6 Connectivity Configuration Utility Copyright : SixXS Version : 2007.01.15 make[1]: Entering directory `/root/aiccu/unix-console' In file included from ../common/aiccu.h:17:0, from main.c:13: ../common/common.h:326:27: schwerwiegender Fehler: gnutls/gnutls.h: Datei oder Verzeichnis nicht gefunden #include <gnutls/gnutls.h> [root@ikarus aiccu]# yum install gnutls Geladene Plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: ftp-stud.fht-esslingen.de * epel: mirror.de.leaseweb.net * extras: mirror.de.leaseweb.net * updates: mirror.23media.de Paket gnutls-3.3.8-12.el7_1.1.x86_64 ist bereits in der neuesten Version installiert. Nichts zu tun Any ideas how to go on? Any advice would be appreciated thx in advance Gerald