IPv6 over IPv4 - what am I doing wrong?

brejski — Mon, 16 May 2022 18:07:42 +0000

Hi guys,
I am trying to set up a tunnel via Route48 or HE to make IPv6 working at home. I have a public IPv4 (carrier says it's dynamic, but it did not change in the last 5 months, lol) and MikroTik RB4011iGS+5HacQ2HnD (RouterOS 7.1.1 stable).
Because my carrier provided me a semi-managed by them router [ZTE] (I do not have administrative access to it, I can for example set up firewall or change wifi password), I made NAT on my MikroTik.
It looks like that:
ZTE: 192.168.1.0/24
MikroTik: 192.168.1.2, DMZ 192.168.1.6 (WAN INTERNET), NAT 192.168.88.0/24
All devices except IPTV client device, are connected to MikroTik

What I want to reach is to make IPv6 work in my home network and I tried several ways to make the tunnel working, but both do not work.

First approach: using NAT IP (192.168.88.1)
[admin@MikroTik] > /interface 6to4 add comment="Route48.org Tunnel Broker (DE)" disabled=no local-address=192.168.88.1 mtu=1280 name=sit1 remote-address=194.50.X.X [admin@MikroTik] > /ipv6 route add comment="" disabled=no distance=1 dst-address=::/0 gateway=2a06:a003:XXXX::1 scope=30 target-scope=10 [admin@MikroTik] > /ipv6 address add address=2a06:a003:XXXX::2/48 advertise=no disabled=no eui-64=no interface=sit1

Second approach: using carrier router IP (192.168.1.6):
[admin@MikroTik] > /interface 6to4 add comment="Route48.org Tunnel Broker (DE)" disabled=no local-address=192.168.1.6 mtu=1280 name=sit1 remote-address=194.50.X.X [admin@MikroTik] > /ipv6 route add comment="" disabled=no distance=1 dst-address=::/0 gateway=2a06:a003:XXXX::1 scope=30 target-scope=10 [admin@MikroTik] > /ipv6 address add address=2a06:a003:XXXX::2/48 advertise=no disabled=no eui-64=no interface=sit1

I also tried to forward all ports to Mikrotik and use my public IPv4, but it didn't work neither...

After any try, I tried to ping Cloudflare IPv6 DNS, but there are timeouts...
[admin@MikroTik] > ping 2606:4700:4700::1111 SEQ HOST SIZE TTL TIME STATUS 0 2606:4700:4700::1111 timeout 1 2606:4700:4700::1111 timeout 2 2606:4700:4700::1111 timeout 3 2001:470:71:74b:: 104 64 95ms158us address unreachable

What am I doing wrong in my config? Tunnel does not work neither with Route48 nor HE.

router — LowEndSpirit

IPv6 over IPv4 - what am I doing wrong?