sources
https://forum.stricted.net/
http://www.lubensky.de/hybrid/tippsundtricks.html

improve connectivity
http://speedport.ip/engineer/html/dsl.html?lang=de
Bonding TR-181 -> QueueSkbTimeOut to 500

activate telnet
decrypt config file
https://gist.githubusercontent.com/Doridian/75e2566a6e94e305801d/raw/7893bfa6a263b4f4bc8b3f4162ad272287e39967/spcrypt.sh

./spcrypt.sh -d Speedport_Hybrid.config Speedport_Hybrid.txt 
vim Speedport_Hybrid.txt

<X_ServiceManage TelnetEnable="0" TelnetPort="23" KeyEquipMode="0"/> <UserInfoInstance InstanceID="1" Username="!!Huawei" Userpassword="@HuaweiHgw" Userlevel="0" Timestamp="0000-00-00 00:00:00" Size="0"/> <UserInfoInstance InstanceID="2" Username="user" Userpassword="user" Userlevel="1" Timestamp="0000-00-00 00:00:00" Size="0"/>

change filesystem

mount -o rw -t jffs2 /dev/mtdblock0 /tmp/mount/ 
mount -o remount,rw /dev/mtdblock0 /tmp/mount

bootstrap
https://forum.stricted.net/index.php/Thread/53-Bootstrap-Erweiterungen-Änderungen-auf-USB-auslagern/

modify dhcp6s
https://forum.stricted.net/index.php/Thread/69-SP-H-IPv6-Prefix-Delegation-mit-Telekom-Adressen/?pageNo=1