Block ipv6 neighbor advertisement

RouterOS Beginner Basics
1

Hello,
How can i remove ipv6 default-route received from RAs? I get 2 RAs from the PON and only one of them is the right one. I would like to filter the other one. Is this possible on mikrotik?

For now i have disabled receiving router advertisement and added a static Neighbor prefix. But this isn’t a good solution.

2

You could use a firewall raw pre-routing rule to drop ICMPv6 packets of type 134 and MAC address of the undesired router.

3

Ask your ISP?

4

Your ISP messed up their configuration. They should configure RAs only on the correct VLAN/Interfaces.