disabling ipv6

[Erez D]

Hello

I've swapped isp (hot/hotnet) and now i have ipv6 support which i can't
turn off.
I have a few issues with ipv6:
1. no NAT so all my devices are accessible from outside
2. can't redirect DNS traffic to my DNS server

I thought about adding a firewall, but this way i need a small fast-enough
HW for this which is expensive, as well as disable HOT's router wifi so i
actually need a wifi router ...

can't i just install a dhcpv6 server on an RPi, which will hijack the
default route and DNS servers, and so actually disable ipv6 ?

Thanks,
Erez.
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