GT06m Tracker config with IPv6 Server

Hello,
after some trouble i got a GT06m tracker working with demoserver 4. Fine :)
But my own Server is behind IPv6 only.
It is working fine with android and iphone devices when i give them the domain: domain.de/:8081
When i send adminip 123456 domain.de 5023 i get HOSTname set OK
But it doesnt change the IP from demo to correct. So i havent a x.x.x.x IPv4 what can i do to connect to my server?
It even doesnt accept an IPv6 like 2001:0db8:1234:0000:0000:0000:0000:0000 or [2001:0db8:1234:0000:0000:0000:0000:0000]
Any idea?

OK, i learnt a little: with noadminip123456 you can delete IP on some trackers. Not mine...
But: It isnt neccesary. If i set adminip to 0.0.0.0 > both (hostname and IP) get deleted.
When i set to "demo4.traccar.org" the check123456 brings him AND 0.0.0.0 as IP.
When i wait some minutes and check again, the IP is the correct 46.101.24.212 automaticaly.
So i think that bad news for me.
The tracker cant resolve domain.de because its IPv6 and so he cant put in a IP and even not connect it :(
Am i right?
And if so: Do i have any chance getting a tracker with ipv6? Or do i have to look for a phone that i can build in Trailor and excavateur?

Hello again :)
It seems you can move it to "devices"
I got it now working with a IPv4> IPv6 Portmapper.
Because this is not a comfourtable way: I search for tracker who are able connecting to a Domain- / Hostname.
Regardless if he ist IPv4 or IPv6
Has anyone experience with this?