Issues with IPv6 connectivity

[suki]

Hello

issue:
expected ipv6 misconfiguration,
long page loads

debug token:
v3l4e93num

setup:
pihole on a pi, dhcp activated,ethernet only
fritzbox 5490 router, no dhcp, O+M flag activated so that SLAAC is possible, gives out ULAs only when no ipv6 connectivity to the interwebs is given

ipv4 is up and running, iptables rejects incoming traffic on port 443
ipv6 misbehaves, ip6tables rejects incoming traffic port 443

What I don't understand is: the fritzbox asks me for a dnsV6 server, so i pass it the IP that the pihole gives me through the admin interface: but i don't see that IP in the output of ip addr or ifconfig on the pihole. My understanding of ipv6 is limited, and i guess I'll have to read into it a bit - but from previous experiences I would've thought dhcp wouldn't be too hard to get up and running.

I do have ipv6 connectivity through my ISP - so that's given.

So after a week of semi-frustrating surfing, due to my own misconfiguration - I though I best just ask for help.

kind regards

suki

[suki]

I figured this issue has already been covered in

Use IPv6 ULA addresses for Pi-hole

Many users have reported that frequently changing IPv6 addresses cause page load to be slow or even prevent from working at all. The issues can be fixed by updating the IPv6 address in /etc/pihole/setupVars.conf followed by a run of pihole -g. However, this solution turns out to be very inconvenient since it might be necessary to change the IPv6 address on a regular basis (maybe even multiple times a day). An alternative approach we are currently looking into is the usage of ULA addresses which…

I shall try this later this evening. Yet i'm still confused - when i do a sudo pihole -r and reconfigure the pihole install might pick up a new ipv6 - and yet i still don't see it in the output of ip addr / ifconfig.

[Mcat12]

Run pihole -d for a debug token.