How to properly setup IPV6 over PPPoE?

RouterOS General
1

Hi guys,

I have a scenario where everything is working fine, unless IPv6. Actually, it’s WORKS! But, my ISP forces PPPoE to renew every 48h, when it renew, I get new IPv4, and IPv6 prefix too.

When I used Openwrt/LEDE, every time PPPoE “restarts”, every device conected by DHCP “renew” its IPv6, and everything keeps flawless.

Now, in mikrotik, every past 48 hours, IPv4 changes, but IPv6 doesn’t advertise to DHCP. Some sites tries to open through IPv6, no success… If I switch off, and turn on the WiFi from my iPhone, it’s fixed! Same about my computer, if I turn off ethernet adapter, and turn on, it’s fixed.

I guess the problem is in configuration, can you guys help me to figure out?

What I already did? Created a DHCPv6 client, interface=pppoeout1, only prefix (not adress), pool=pool_isp Created an IPv6 Adress pointed to my interface=bridge, from pool=pool_isp, box Advertised=marked.

This way above, things works until pppoe renews. My intention is to keep IPv6 working after pppoe session refreshes.

2

The more experienced / knowledgeable can correct me here, but why are you using “DHCP Client” & “PPPoE”, usually you will use one or the other?

3

Hallo

Under IPv6 → ND you can set the prefered lifetime und the valid lifetime for every prefix or globally. Maybe this will help

4

My ISP provide me VDSL connection. Put my modem in bridge mode.
Set up PPPoE client into mikrotik.
I just want to advertise IPv6 over my network. And it’s working, until PPPoE’s session renews.

5

Is common to use DHCPv6-client on pppoe-client interface to get the IPv6 prefix.
In Brazil is common this form on ADSL, VDSL and FTTH.
Only cable (docsis, utp) uses DHCPv4/v6-client to get the address.


This is what he said: http://forum.mikrotik.com/t/ipv6-is-not-advertising/116749/2

6

Hi, this article describes how to properly configure Mikrotik router to act as PPPoE server with IPv6: https://splynx.com/5684/mikrotik-ipv6-configuration/