@kirschwipfel me too (no hashtag)! Same here. And I definitely need some #documentation, #howto and #tutorial. Too less knowledge so far.
@Photor @kirschwipfel What routers (hardware/software) and isp do you have?
@kirschwipfel Sorry but I do not understand what you mean.
You cannot switch off IPv4 completely because large part of web is *not* on IPv6. AWS & friends still consider IPv6 to be a "premium feature".
What you can do is disable IPv4 in LAN and enable NAT64 and DNS64 on the router but that's a workaround.
@kravietz NAT64 won't work for some services. I heard Spotify has problems with NAT64. Also it is way to complex to setup.
@kirschwipfel you are probably already using IPv6 and IPv4 in parallel on most of you devices. You are just missing the default route to "the internet".