too much Wifi WLAN exposure is a health problem – About AVM FritzBoxes (7390) Rename Network Device – Netzwerk Gerät umbenennen – Rename Router Device change hostname netbios name – Meshing
Set up IPv6 on the computer and the FRITZ! Box
Alternative DNSv4 and DNSv6-Servers for FritzBox needed - Help - Pi-hole Userspace
Fritzbox: DNS-Server ändern
email - Fritz!Box cannot use mailserver that uses ECDSA X.509-certificate - Super User