@mibere ok here the tutorial how to deactivate the ipv6 dhcp and put the ipv6 dns to your pihole:
Requirements:
- pihole with static ipv6 and ipv4
- a good text editing software like notepad++
Ok the very first and most important step is: Make a backup of the Speedport settings and put it somewhere safe if something goes wrong! (the option for that is under Setting>Backup settings (from there it should be pretty obvious what to do)
find out what firmware you have ( either
xxxxxx.03.xx.xxx or xxxxxx.02.xx.xxx )
get this userscript for greasemonkey or tampermonkey (depending what browser you use)
this is for the V2
this for the V3
you may have to add it manually too your script list.
basically what this script does: when your are logged in your speedport instead of the manual in the upper right it will lead to the engineer-menu (basically alot of stuff that a normal user shouldn't see).
and this script enables editing of the DNS section of the menu
(you can change alot of other things in there but most of it is "hidden" in the code. you can just edit the sites code to show it and it works just fine)
so once you enabled that script login into your speedport and go into the engineer menu with the new button in the upper right.
from there you go to the DNS tab on the left site.
you might have to press the refresh button on down left.
there you can change both DNS server. in the "Primary DNS server" you put the ipv6 adress of your pi and change from "Online Receved Entry" to "Manual Entry" and press submit.
The "Tertiary DNS server" should be already showing the ipv4 adress of your pi but if it doesnt change that too.
that was the first easy part.
Now you need to deactivate the ipv6 DHCP server but you cant do that in the enginner menu sadly.
now make a "backup" of your Speedport again but put that in a folder where you can find it again.
get this program and launch it: https://github.com/Stricted/SPHDecode/releases/download/v1.6/SPHDecode.zip
this will decrypt the config so that we can edit it.
to use this program just start it and press "source file" and point it to your encrypted config.
press "Save File" and point somewhere where you can find it. (name it decrypted.config or something).
now press decrypt and it should make a config that is editable.
now you can edit that config with Notepad++.
now search this piece
<Server Enable="1">
(there should be only this one. this is the dhcpv6 server setting inside the config.)
set that to 0 .
now open the "SphDecode" program again and point as source file your edited config and press save file and point it where you want it do be saved.
now press encrypt and it should make a config file that we can put into the speedport.
now go back into the speedport settings and instead of making the backup Restore the edited "backup"
that should be it. there alot of other stuff you can do with that config editing but always keep a backup of your working config.
if you can understand german there is even a whole forum about the Speedport Hybrid editing: Stricted.net
